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Pope Francis waves to people from his popemobile as he arrives for a vigil with pilgrims in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Jorge Saenz) ( CORRECTION Brazil Pope )

RIO DE JANEIRO, BRAZIL - JULY 27: Pilgrims and others jam Copacabana Beach during World Youth Day celebrations where Pope Francis will later attend a prayer vigil with youth on July 27, 2013 in Rio de Janeiro, Brazil. More than 1.5 million pilgrims are expected to join the pontiff for his visit to the Catholic Church's World Youth Day celebrations which runs July 23-28. (Photo by Mario Tama/Getty Images) ( 174576968 )

The World Youth Day (WYD) Cross that in 1984 Pope John Paul II entrusted the youth of the world is fixed on the stage before the arrival of Pope Francis for a prayer vigil with hundreds of thousands of young Catholic pilgrims attending WYD, at Copacabana beach in Rio de Janeiro, Brazil, on July 27, 2013. LUCA ZENNARO/AFP/Getty Images ( 521686587 )

Pope Francis waves at faithfuls standing along the beachfront in Rio de Janeiro on his way for a prayer vigil with hundreds of thousands of young Catholic pilgrims attending World Youth Day (WYD) at Copacabana beach on July 27, 2013, during his week-long visit to Brazil. CHRISTOPHE SIMON/AFP/Getty Images ( 521680635 )

A pilgrim from Argentina on Copacabana beach has a Jesus tattoo that reads in Spanish "How is it that they don't speak about you if your voice burns inside me" as he waits with others for Pope Francis' arrival in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

Two Polish nuns laugh on the shore as hundreds of thousands of young Catholic pilgrims attending World Youth Day (WYD) start gathering at Copacabana beach in Rio de Janeiro for a prayer vigil with Pope Francis, on July 27, 2013. In a speech to Brazil's political, religious and civil society leaders earlier, Pope Francis said a "constructive dialogue" was needed to confront the country's social turmoil, referring to the massive street protests that rocked Brazil last month to demand an end to corruption and better public services. YASUYOSHI CHIBA/AFP/Getty Images ( 521680076 )

Pope Francis celebrates mass with bishops, priests and seminarians at the Cathedral of St. Sebastian in Rio de Janeiro, Brazil, on July 27, 2013. Pope Francis urged the Brazilian Roman Catholic Church on Saturday to win back believers who abandoned it for other religions or lost faith. LUCA ZENNARO/AFP/Getty Images ( 521680086 )

Pope Francis waves to people from his popemobile in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Pope Francis on Saturday challenged bishops from around the world to get out of their churches and preach, and to have the courage to go to the farthest margins of society to find the faithful. (AP Photo/Nicolas Tanner) ( CORRECTION Brazil Pope )

Pilgrims play guitar and sing near a Brazilian flag, left, and a Spanish flag, right, on Copacabana beach in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Pope Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Victor R. Caivano) ( Brazil Pope )

A Catholic pilgrim attending World Youth Day (WYD) holds a crucifix as he waits for the arrival of Pope Francis for a prayer vigil at Copacabana beach in Rio de Janeiro, Brazil, on July 27, 2013. CHRISTOPHE SIMON/AFP/Getty Images ( 521680274 )

A group of people demonstrate against the Catholic Church and in favour of abortion during the landmark visit of Pope Francis to Brazil, as hundreds of thousands of young Catholic pilgrims attending World Youth Day (WYD) start gathering at Copacabana beach for a prayer vigil with the pontiff, on July 27, 2013. In a speech to Brazil's political, religious and civil society leaders earlier, Pope Francis said a "constructive dialogue" was needed to confront the country's social turmoil, referring to the massive street protests that rocked Brazil last month to demand an end to corruption and better public services. TASSO MARCELO/AFP/Getty Images ( 521675185 )

A flag with an image of Pope Francis is seen at Copacabana beach in Rio de Janeiro as hundreds of thousands of young Catholic pilgrims attending World Youth Day (WYD) start gathering for a prayer vigil with Pope Francis, on July 27, 2013. In a speech to Brazil's political, religious and civil society leaders earlier, Pope Francis said a "constructive dialogue" was needed to confront the country's social turmoil, referring to the massive street protests that rocked Brazil last month to demand an end to corruption and better public services. VANDERLEI ALMEIDA/AFP/Getty Images ( 521674228 )

Pilgrims walk across Rio de Janeiro to reach Copacabana beach to join hundreds of thousands of other young Catholics attending World Youth Day (WYD) for a prayer vigil with Pope Francis on July 27, 2013. In a speech to Brazil's political, religious and civil society leaders earlier, Pope Francis said a "constructive dialogue" was needed to confront the country's social turmoil, referring to the massive street protests that rocked Brazil last month to demand an end to corruption and better public services. YASUYOSHI CHIBA/AFP/Getty Images ( 521673285 )

Pilgrims walk across Rio de Janeiro to reach Copacabana beach to join hundreds of thousands of other young Catholics attending World Youth Day (WYD) for a prayer vigil with Pope Francis on July 27, 2013. In a speech to Brazil's political, religious and civil society leaders earlier, Pope Francis said a "constructive dialogue" was needed to confront the country's social turmoil, referring to the massive street protests that rocked Brazil last month to demand an end to corruption and better public services. YASUYOSHI CHIBA/AFP/Getty Images ( 521673272 )

Argentine pilgrims wait outside the Municipal Theatre in Rio de Janeiro where Pope Francis is due to arrive for a meeting with leaders of Brazil, on July 27, 2013. Pope Francis joins young pilgrims in a prayer vigil on Rio's Copacabana beach Saturday as he presses his drive to breathe new life into a struggling Catholic faith. Hundreds of thousands of Catholics attending the five-day gathering World Youth Day are set to walk nine kilometers across the city to reach the beach venue for the vigil. YASUYOSHI CHIBA/AFP/Getty Images ( 521668901 )

A pilgrim rests under an umbrella decorated with images of the Christ the Redeemer statue as she waits on Copacabana beach for an evening vigil with Pope Francis during World Youth Day events in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Jorge Saenz) ( Brazil Pope Photo Gallery )

A woman holds a rosary as she speaks to women making a "Slut walk" in favor of abortion rights and women's rights on Copacabana beach near the site of a vigil that is part of World Youth Day celebrations attended by Pope Francis in Rio de Janeiro, Saturday, July 27, 2013. The sign at top right reads in Portuguese "My mother and I, we're both sluts." (AP Photo/Silvia Izquierdo) ( Brazil Pope Protest )

Pope Francis wears an indigenous headdress given to him by Ubirai Matos from the Pataxo tribe, fourth from left, after the pontiff spoke at Rio's Municipal Theater to an audience mostly made up of Brazil's political, business and cultural elite in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Pope Francis is on the sixth day of his trip to Brazil where he will attend the 2013 World Youth Day in Rio. (AP Photo/Monica Imbuzeiro, Agencia O Globo) ( Brazil Pope )

A view is seen inside the Sao Sebastiao Cathedral as Pope Francis celebrates mass in Rio de Janeiro, July 27, 2013. Pope Francis told Catholic clergy on Saturday to leave their comfort zones and smug surroundings and reach out to serve the poor and needy. REUTERS/Luca Zennaro ( POPE-BRAZIL/ )

Pilgrims carrying a Brazilian flag sing on Copacabana beach in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Pope Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

Pilgrims kiss on Copacabana beach as they wait for Pope Francis' arrival in Rio de Janeiro, Brazil, Saturday, July 27, 2013. Francis will preside over an evening vigil service on Copacabana beach that is expected to draw more than 1 million young people. (AP Photo/Victor R. Caivano) ( Brazil Pope )

Actors perform a Via Crucis for Pope Francis on Copacabana Beach in Rio de Janeiro, July 26, 2013, in this handout provided by Osservatore Romano. REUTERS/Osservatore Romano/Handout via Reuters ( POPE-BRAZIL/ )

Pope Francis leaves the Quinta Boa Vista park after hearing the confessions of youths attending the World Youth Day, in Rio de Janeiro July 26, 2013. REUTERS/Ricardo Moraes ( POPE-BRAZIL/ )

Men peer through a window of the San Joaquin Episcopal Palace in Rio de Janeiro, Brazil, as they wait for the arrival of Pope Francis, on July 26, 2013. Pope Francis will meet young convicts here and then return to Copacabana beach Friday where 1.5 million Catholics gathered on Rio de Janeiro's seafront to see him speak the previous night in a massive ceremony for World Youth Day festivities. GABRIEL BOUYS/AFP/Getty Images ( 521644334 )

Pilgrims pray as Pope Francis blesses the crowd during the Angelus noon prayer outside the Palacio Sao Joaquim, where he met with convicted prisoners, in Rio de Janeiro, Brazil, Friday, July 26, 2013. Pope Francis is on the fifth day of his trip to Brazil where he will attend the 2013 World Youth Day in Rio. (AP Photo/Jorge Saenz) ( Brazil Pope )

A girl reacts as she is carried by a security officer to Pope Francis as he travels through the Gloria neighborhood in his popemobile on his way to the archbishops's palace in Rio de Janeiro, Brazil, Friday, July 26, 2013. At the archbishops's palace Francis will hold a series of meetings and public noon prayer. (AP Photo/Felipe Dana) ( Brazil Pope )

A man dressed as Jesus Christ poses for a photo as he waits with others for Pope Francis to give Angelus noon prayer at the Sao Joaquim Palace in Rio de Janeiro, Brazil, Friday, July 26, 2013. Pope Francis is on the fifth day of his trip to Brazil where he will attend the 2013 World Youth Day in Rio. (AP Photo/Jorge Saenz) ( Brazil Pope )

Faithful wait for Pope Francis at the Quinta Boa Vista park where he shall hear the confessions of youths attending the World Youth Day in Rio de Janeiro, July 26, 2013. REUTERS/Ricardo Moraes ( POPE-BRAZIL/ )

Pope Francis speaks from the balcony of Sao Joaquim Palace in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Pilar Olivares ( POPE-BRAZIL/ )

People gather to listen to Pope Francis, top center above red banner, give Angelus noon prayer from Sao Joaquim Palace in Rio de Janeiro, Brazil, Friday, July 26, 2013. Pope Francis is on the fifth day of his trip to Brazil where he will attend the 2013 World Youth Day in Rio. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope )

A woman gathering with other faithfuls outside the San Joaquin Episcopal Palace in Rio de Janeiro, Brazil, prays as Pope Francis delivers the Angelus prayer on July 26, 2013. Pope Francis met young convicts here and will later return to Copacabana beach Friday where 1.5 million Catholics gathered on Rio de Janeiro's seafront to see him speak the previous night in a massive ceremony for World Youth Day festivities. GABRIEL BOUYS/AFP/Getty Images ( 521646698 )

Franciscan friars read at the San Joaquin Episcopal Palace in Rio de Janeiro, Brazil, before the arrival of Pope Francis, on July 26, 2013. Pope Francis will meet young convicts here and then return to Copacabana beach Friday where 1.5 million Catholics gathered on Rio de Janeiro's seafront to see him speak the previous night in a massive ceremony for World Youth Day festivities. YASUYOSHI CHIBA/AFP/Getty Images ( 521644096 )

Catholic youths await the arrival of Pope Francis on Copacabana beach in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Sergio Moraes ( POPE-BRAZIL/ )

People start gathering at Copacabana beach hours before the arrival of Pope Francis to participate in a re-enactment of the 14 Stations of the Cross -- scenes of Jesus carrying the cross to his crucifixion -- in Rio de Janeiro, on July 26, 2013. Pope Francis, who is in Rio for the weeklong gathering of young Catholics World Youth Day, took his high-octane mission to "shake up" Catholic faith back to the streets of Brazil Friday, greeting throngs of pilgrims, meeting convicts and hearing youngsters confess their sins. VANDERLEI ALMEIDA/AFP/Getty Images ( 521652293 )

Nuns and sunbathers wait for the arrival of Pope Francis on Copacabana beach in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Ricardo Moraes ( POPE-BRAZIL/ )

A boy wrapped in a Brazilian flag heads to Copacabana beach to wait for the arrival of the pontiff who will participate in a re-enactment of the 14 Stations of the Cross -- scenes of Jesus carrying the cross to his crucifixion -- in Rio de Janeiro, on July 26, 2013. Pope Francis, who is in Rio for the weeklong gathering of young Catholics World Youth Day, took his high-octane mission to "shake up" Catholic faith back to the streets of Brazil Friday, greeting throngs of pilgrims, meeting convicts and hearing youngsters confess their sins. CHRISTOPHE SIMON/AFP/Getty Images ( 521651369 )

Pope Francis waves at faithfuls standing on the beachfront as he arrives on the popemobile at Copacabana beach to participate in a re-enactment of the 14 Stations of the Cross -- scenes of Jesus carrying the cross to his crucifixion -- in Rio de Janeiro, on July 26, 2013. Pope Francis, who is in Rio for the weeklong gathering of young Catholics World Youth Day, took his high-octane mission to "shake up" Catholic faith back to the streets of Brazil Friday, greeting throngs of pilgrims, meeting convicts and hearing youngsters confess their sins. EVARISTO SA/AFP/Getty Images ( 521654811 )

The wind blows Pope Francis's mantle as he speaks at Copacabana beach in Rio de Janeiro, Brazil during the World Youth Day on July 25, 2013. The first Latin American and Jesuit pontiff arrived in Brazil mainly for the huge five-day Catholic gathering World Youth Day. On the fourth day of his visit to Brazil and borne along by adoring crowds, Pope Francis waded into the country's ramshackle slums and onto the front line of its fierce national battle over poverty and corruption, before going to the much wealthier district of Copacabana for his welcome by the youth. LUCA ZENNARO/AFP/Getty Images ( 521633592 )

Pope Francis holds a baby as he meets the residents of the Varginha favela in Rio de Janeiro, Brazil on July 25, 2013. The Varginha favela is a community of 1,000 people which for decades was under the sway of narco-traffickers until it came under police control less than a year ago. The first Latin American and Jesuit pontiff arrived in Brazil mainly for the huge five-day Catholic gathering World Youth Day. OSSERVATORE ROMANO/AFP/Getty Images ( 521633423 )

Hundreds of thousands crowd the Copacabana beachfront during the World Youth Day Welcome Feast in Rio de Janeiro, Thursday, July 25, 2013. Pope Francis addressed the young pilgrims from 175 nations gathered on the famous beach. Francis is on the fourth day of his trip to Brazil. (AP Photo/Domenico Stinellis) ( Brazil Pope )

A gust of wind lifts the cape of Pope Francis as he addresses the youth gathered at the World Youth Day Welcome Feast on the Copacabana beachfront in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis addressed young pilgrims from 175 nations gathered on the famous beach for the WYD festival. (AP Photo/Stefano Rellandini, Pool) ( Brazil Pope )

Pope Francis is projected on screens at Copacabana beach in Rio de Janeiro, July 25, 2013. Pope Francis is on the fourth day of his week-long visit for World Youth Day. REUTERS/Paulo Whitaker ( POPE-BRAZIL/ )

World Youth Day pilgrims get revved up as they wait for the arrival of Pope Francis on Copacabana beach in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis will address young Roman Catholics on Copacabana beach Thursday, as Latin America's first pope continues his inaugural international trip as pontiff. (AP Photo/Jorge Saenz) ( Brazil Pope )

Pope Francis arrives on the popemobile at Rio de Janeiro's iconic Copacabana beachfront on July 25, 2013 for his welcome to World Youth Day ceremonies. On the fourth day of his visit to Brazil and borne along by adoring crowds, Pope Francis waded into the country's ramshackle slums and onto the front line of its fierce national battle over poverty and corruption, before going to the much wealthier district of Copacabana for his welcome by the youth. GABRIEL BOUYS/AFP/Getty Images ( 521629773 )

Pope Francis is projected on screens at Copacabana beach in Rio de Janeiro July 25, 2013. Pope Francis is on the fourth day of his week-long visit for World Youth Day. REUTERS/Ueslei Marcelino ( POPE-BRAZIL/ )

Pope Francis talks to pilgrims from the stage on the Copacabana beachfront in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis addressed young pilgrims from 175 nations gathered on the beach on Thursday, as Latin America's first pope continues his inaugural international trip as pontiff. (AP Photo/Enric Marti) ( Brazil Pope )

A Catholic faithful with a sticker bearing an image of Pope Francis on his forehead looks on while waiting for the Pope to arrive in Copacabana beach in Rio de Janeiro, July 25, 2013. Pope Francis is on the fourth day of his week-long visit for World Youth Day. REUTERS/Ueslei Marcelino ( POPE-BRAZIL/ )

Pope Francis arrives for a World Youth Day celebration at the Copacabana beachfront in Rio de Janeiro, Brazil, Thursday July 25, 2013. Cheering pilgrims from 175 nations lined the beachfront drive to catch a glimpse of Francis. The popemobile stopped several times for Francis to kiss babies - and take a sip of his beloved mate, the traditional Argentine tea served in a gourd with a straw, that was handed up to him by someone in the crowd. (AP Photo/Enric Marti) ( Brazil Pope )

Thousands of young people gather at Rio de Janeiro's iconic Copacabana beachfront on July 25, 2013 for the welcoming of Pope Francis to World Youth Day ceremonies. On the fourth day of his visit to Brazil and borne along by adoring crowds, Pope Francis waded into the country's ramshackle slums and onto the front line of its fierce national battle over poverty and corruption, before going to the much wealthier district of Copacabana for his welcome by the youth. CHRISTOPHE SIMON/AFP/Getty Images ( 521628269 )

Pope Francis holds up an Olympic T-shirt with his name on it given to him in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis blessed the Olympic flag, visited a slum and will address young Roman Catholics in Rio de Janeiro's Copacabana beach on Thursday, as Latin America's first pope continued his inaugural international trip as pontiff. The shirt was given to him by Carlos Arthur Nuzman, president of the Brazilian Olympic Committee. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope Photo Gallery )

People greet and take pictures of Pope Francis as he visits the Varginha slum in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

Pope Francis blesses a child during his visit to the Varginha slum in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope Photo Gallery )

People greet Pope Francis, center, as he visits the Varginha slum in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

People line the roads to greet Pope Francis as he arrives in his popemobile to the Varginha slum, part of the Manguinhos slum complex in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Pope Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Felipe Dana) ( Brazil Pope Photo Gallery )

Pope Francis kisses a baby girl as he is surrounded by security during his visit to the Varginha slum in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis on Thursday visited one of Rio de Janeiro's shantytowns, or favelas, a place that saw such rough violence in the past that it's known by locals as the Gaza Strip. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

Participants of Word Youth Day gather on Copacabana beach in Rio de Janeiro, Brazil, Thursday, July 25, 2013. Francis will address young Roman Catholics on Copacabana beach on Thursday, as Latin America's first pope continues his inaugural international trip as pontiff. (AP Photo/Felipe Dana) ( Brazil Pope Photo Gallery )

Catholic pilgrims carry the World Youth Day Cross up to a stage before the arrival of Pope Francis on Copacabana beach in Rio de Janeiro July 25, 2013. Pope Francis is on the fourth day of his week-long visit for World Youth Day. REUTERS/Sergio Moraes ( POPE-BRAZIL/ )

Pilgrims wait under the rain outside the Aparecida basilica for the arrival of Pope Francis in Aparecida, Brazil, Wednesday, July 24, 2013. Thousands packed into the huge basilica, and tens of thousands more braved a cold rain outside to catch a glimpse of the first pope from the Americas returning to a shrine of great meaning to the continent and to him personally. (AP Photo/Victor R. Caivano) ( Brazil Pope Photo Gallery )

Pope Francis poses for a picture with military policemen outside the Metropolitan cathedral in Rio de Janeiro on July 25, 2013. The first Latin American and Jesuit pontiff arrived in Brazil mainly for the huge five-day Catholic gathering World Youth Day. STEFANO RELLANDINI/AFP/Getty Images ( 521626144 )

Pope Francis flutters an Argentine flag outside the Metropolitan cathedral in Rio de Janeiro, Brazil on July 25, 2013. The first Latin American and Jesuit pontiff arrived in Brazil mainly for the huge five-day Catholic gathering World Youth Day. LUCA ZENNARO/AFP/Getty Images ( 521626639 )

Pope Francis faces the statue of the Virgin of Aparecida, Brazil's patron saint, in the Aparecida Basilica, in Aparecida, Brazil, Wednesday, July 24, 2013. Before the Mass, Francis stood in silent prayer in front of the 15-inch statue of the Virgin of Aparecida, the "Black Mary," his eyes tearing up. (AP Photo/Felipe Dana) ( Brazil Pope Photo Gallery )

A woman prays as she holds two crucifixes while waiting for the arrival of Pope Francis to the Aparecida basilica in Aparecida, Brazil, Wednesday, July 24, 2013. Tens of thousands of faithful flocked to the tiny town of Aparecida, tucked into an agricultural region halfway between Rio de Janeiro and Sao Paulo, where Francis celebrated the first public Mass of his trip in the basilica dedicated to the nation's patron saint. (AP Photo/Luca Zennaro, Pool) ( Brazil Pope Photo Gallery )

A person holds up a rosary during Mass celebrated by Pope Francis outside the Aparecida Basilica in Aparecida, Brazil, Wednesday, July 24, 2013. The church is struggling in Latin America to keep Catholics from straying to evangelical and Pentecostal churches that often promise help in finding material wealth, an alluring attraction in a poverty-wracked continent. Francis' top priority as pope has been to reach out to the world's poor and inspire Catholic leaders to go to slums and other peripheries to preach. (AP Photo/Andre Penner) ( Brazil Pope Photo Gallery )

Pope Francis reaches out to kiss a child as he arrives to the Aparecida Basilicia in Aparecida, Brazil, Wednesday, July 24, 2013. (AP Photo/Domenico Stinellis) ( Brazil Pope Photo Gallery )

Pope Francis waves to pilgrims from his popemobile as he arrives to the Aparecida Basilica in Aparecida, Brazil, Wednesday, July 24, 2013. It was no coincidence that the first major event of his first foreign trip as pope was a Mass in Aparecida. The shrine, which draws 11 million pilgrims a year, hosted a critical 2007 meeting of Latin American bishops attended by then-Cardinal Jorge Mario Bergoglio. (AP Photo/Enric Marti) ( Brazil Pope Photo Gallery )

Members of the clergy listen to Pope Francis, center right, as he gives Mass inside Aparecida Basilica in Aparecida, Brazil, Wednesday, July 24, 2013. Francis made an emotional plea Wednesday for Roman Catholics to shun materialism in the first public Mass of his initial international trip as pontiff. (AP Photo/Felipe Dana) ( Brazil Pope Photo Gallery )

Pope Francis waves as he arrives to the St. Francis of Assisi of the Providence of God Hospital, where the Franciscans look after alcohol and drug addicts, in Rio de Janeiro, Brazil, Wednesday, July 24, 2013. Francis made an emotional plea Wednesday for Roman Catholics to shun materialism in the first public Mass of his initial international trip as pontiff, then met with drug addicts in Rio and denounced the "dealers of death" who fuel their suffering. (AP Photo/Silvia Izquierdo) ( Brazil Pope Photo Gallery )

Roque Steves, dressed in the likeness of the Pope, waves to members of security and the press as he arrives to the Sumare residence where Pope Francis is staying in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. Steves said he is a social worker who caters to the poor, and his outfit was his way of calling attention to charity work. Francis is in Brazil for World Youth Day, a church event that takes place about every three years and brings together young Catholics from around the world. (AP Photo/Silvia Izquierdo) ( Brazil Pope Photo Gallery )

Catholics kneel at portable confessionals set up in Quinta da Boa Vista park during World Youth Day events in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. As many as 1 million young people from around the world are expected in Rio for the Catholic youth event. (AP Photo/Silvia Izquierdo) ( Brazil Pope Photo Gallery )

Thousands of young pilgrims get revved up as they gather on Copacabana Beach for a World Youth Day inaugural Mass in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. A cold rain Tuesday night didn't stop upward of 500,000 faithful from gathering on to mark the event. (AP Photo/Jorge Saenz) ( Brazil Pope Photo Gallery )

Pilgrims attend the World Youth Day inaugural Mass on Copacabana beach in Rio de Janeiro, Tuesday, July 23, 2013. As many as 1 million young people from around the world are expected in Rio for the Catholic youth event. Pope Francis arrived in Rio de Janeiro on Monday to begin a weeklong visit to participate in the WYD festival. (AP Photo/Domenico Stinellis) ( Brazil Pope Photo Gallery )

Bishops wearing plastic rain hoods attend the World Youth Day inaugural Mass on Copacabana beach, in Rio de Janeiro, Brazil, Tuesday, July 23, 2013. A cold rain Tuesday night didn't stop upward of 500,000 faithful from gathering on Rio's Copacabana beach to mark the event. (AP Photo/Domenico Stinellis) ( Brazil Pope Photo Gallery )