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A demonstrator shows injures caused by rubber bullets fired by the police during anti government protest in Valencia, Venezuela, Wednesday, Feb. 26, 2014. The protests began with students and were soon joined by others in several cities, upset over crime, economic problems and heavy-handed government response to the protests. (AP Photo/Rodrigo Abd) ( Venezuela Protests )

Demonstrators prepare molotov cocktails during clashes with police during anti government protest in Valencia, Venezuela, Wednesday, Feb. 26, 2014. The protests began with students and were soon joined by others in several cities, upset over crime, economic problems and heavy-handed government response to the protests. (AP Photo/Rodrigo Abd) ( Venezuela Protests )

Flowers with images of slain students Geraldine Moreno, bottom, and Roberto Redman, top, lay at the feet Bolivarian National Guard officers outside their headquarters where a women's march arrived to protest repression against anti-government demonstrators in Caracas, Venezuela, Wednesday, Feb. 26, 2014. Moreno was near her home in Valencia watching students defend a barricade at the corner of her street when national guardsmen rushed in and fired rubber bullets at close range, hitting her in the face. She died from brain injuries on Saturday. Redman was shot and killed in a standoff with police on Feb. 12 in Caracas at the end of an opposition protest. (AP Photo/Fernando Llano) ( Venezuela Protests )

A worker cleans up what remains a Subway sandwich shop at the looted SuperLider commercial center in Maracay, Venezuela, Wednesday, Feb. 26, 2014. People looted the commercial center starting Monday night, after almost two weeks of protests that began with students and were soon joined by others in several cities, upset over crime, economic problems and heavy-handed government response to the protests. (AP Photo/Rodrigo Abd) ( Venezuela Protests )

Nuns raise their arms during a women's march protesting repression against anti-government demonstrators in Caracas, Venezuela, Wednesday, Feb. 26, 2014. Former U.S. President Jimmy Carter is expressing concern about Venezuela's escalating political crisis and wants to meet with leaders on both sides in an upcoming trip.(AP Photo/Fernando Llano) ( Venezuela Protests )

A worker walks inside a looted supermarket at the SuperLider commercial center in Maracay, Venezuela, Wednesday, Feb. 26, 2014. People looted the commercial center on Monday night, after almost two weeks of protests that began with students and were joined by others in several cities, upset over crime, economic problems and the heavy-handed government response to the protests. (AP Photo/Rodrigo Abd) ( APTOPIX Venezuela Protests )

A group of students and supporters of the political party 'Popular Will' gather at the Alfredo Sadel square in Caracas, Venezuela, 25 February 2014, to go to the Cuban embassy in Caracas and deliver an 'Statement to the Cuban dictatorship'. (EPA/MIGUEL GUTIERREZ) ( VENEZUELA MARCHES )

Demonstrators wear masks as they protest against the government of Venezuelan President Nicolas Maduro in Altamira, east of Caracas, Venezuela, 24 February 2014. Two more deaths bring the toll to 13 people killed and more than 150 injured in political violence that has gripped Venezuela since 12 February, Attorney General Luisa Ortega said on 23 February. The Venezuelan government accuses the opposition of attempting a coup d'etat to topple Maduro, who narrowly won election last year as the hand-picked successor to left-wing populist Hugo Chavez, who died in office March 2013. Opposition politician Leopoldo Lopez has been arrested as the leader of the alleged revolt. The opposition has denounced disproportionate use of force against protests and attacks on demonstrators by armed government supporters. (EPA/MIGUEL GUTIERREZ) ( VENEZUELA PROTESTS )

People walk in front of a burning barricade blocking the highway in Chacao, Caracas, Venezuela, Monday, Feb. 24, 2014. Traffic has come to a halt in parts of the Venezuelan capital because of barricades set up by opposition protesters across major thoroughfares. The protests are part of a wave of anti-government demonstrations that have swept Venezuela since Feb. 12 and have resulted in at least 10 deaths. The protests in the capital Monday were peaceful. Police and National Guard troops stood by but did not act to remove the barricades despite the effect on the morning commute. (AP Photo/Rodrigo Abd) ( Venezuela Protests )

A boy sits on a couch reading "And you?" in a barricade during protests against the government of Venezuelan President Nicolas Maduro, in Caracas on February 25, 2014. Angry Venezuelan students geared up to stage a fresh rally on Tuesday, the latest in three weeks of anti-government protests that have left at least 14 people dead. (RAUL ARBOLEDA/AFP/Getty Images) ( 527482686 )

A demonstrator wears a mask during a protest against the government of Venezuelan President Nicolas Maduro, in Caracas on February 24, 2014. At least 14 people have been killed and 140 others injured in protests nationwide, which have posed the greatest challenge to Venezuelan President Nicolas Maduro's government since he was narrowly elected president last year to succeed the late leftist icon Hugo Chavez. (RAUL ARBOLEDA/AFP/Getty Images) ( 527477917 )

Activists prepare to throw a molotov cocktail at National Guard troopers in riot gear during a protest in San Cristobal, capital of the western border state of Tachira, Venezuela, on February 21, 2014. At least 25 people were injured in late Saturday clashes with security forces that were some of the most serious to date. Venezuela's president on Sunday called for crisis talks in an attempt to defuse weeks of often deadly anti-government protests that have brought the biggest challenge yet to his regime. (ORLANDO PARADA/AFP/Getty Images) ( 527462516 )

A supporter of Venezuelan opposition leader Leopoldo Lopez, who was arrested a week ago on charges of homicide and inciting violence, hits a pot in protest against the government of Venezuelan President Nicolas Maduro in San Antonio, in the border state of Tachira, Venezuela, on February 25, 2014. Angry Venezuelan students geared up to stage a fresh rally on Tuesday, the latest in three weeks of anti-government protests that have left at least 14 people dead. (LUIS ROBAYO/AFP/Getty Images) ( 527482819 )

Demonstrators participate in a protest against the government of Venezuelan President Nicolas Maduro in Altamira, east of Caracas, Venezuela, 24 February 2014. Two more deaths bring the toll to 13 people killed and more than 150 injured in political violence that has gripped Venezuela since 12 February, Attorney General Luisa Ortega said on 23 February. The Venezuelan government accuses the opposition of attempting a coup d'etat to topple Maduro, who narrowly won election last year as the hand-picked successor to left-wing populist Hugo Chavez, who died in office March 2013. Opposition politician Leopoldo Lopez has been arrested as the leader of the alleged revolt. The opposition has denounced disproportionate use of force against protests and attacks on demonstrators by armed government supporters. (EPA/MIGUEL GUTIERREZ) ( VENEZUELA PROTESTS )

Members of the National Bolivarian Guard watch as a group of students and supporters of the political party 'Popular Will' gather at the Alfredo Sadel square in Caracas, Venezuela, 25 February 2014, to go to the Cuban embassy in Caracas and deliver an 'Statement to the Cuban dictatorship'. (EPA/MIGUEL GUTIERREZ) ( VENEZUELA MARCHES )

Demonstrators protest against the government of Venezuelan President Nicolas Maduro, in Caracas on February 24, 2014. At least 14 people have been killed and 140 others injured in protests nationwide, which have posed the greatest challenge to Venezuelan President Nicolas Maduro's government since he was narrowly elected president last year to succeed the late leftist icon Hugo Chavez. (RAUL ARBOLEDA/AFP/Getty Images) ( 527464203 )

A man passes by a barricade set ablaze blocking a street during a protest against the government of Venezuelan President Nicolas Maduro, in Caracas on February 24, 2014. At least 25 people were injured in late Saturday clashes with security forces that were some of the most serious to date. Venezuela's president on Sunday called for crisis talks in an attempt to defuse weeks of often deadly anti-government protests that have brought the biggest challenge yet to his regime. (RAUL ARBOLEDA/AFP/Getty Images) ( 527456787 )

Motorcyclists take part in a demonstration to support Venezuelan president Nicolas Maduro in Caracas, Venezuela, 24 February 2014. Anti-government activists have been protesting since 12 February, when riots broke out during a peace rally in the Venezuelan capital, killing several people. (EPA/MIGUEL GUTIERREZ) ( VENEZUELA PROTESTS )

People gather next to a barricade with a sign that reads in Spanish: "He who gives up, loses" in Caracas, Venezuela, Monday, Feb. 24, 2014. Since Feb. 12, opponents of President Nicolas Maduro have been staging countrywide protests that the government says have resulted in scores of deaths and more than one hundred injuries. The demonstrators blame Maduro's administration for the country's high crime rate and economic troubles. (AP Photo/Rodrigo Abd) ( Venezuela Protests )

People walk past a mural of Venezuelan Liberator Simon Bolivar in San Antonio, in the border state of Tachira, Venezuela, on February 25, 2014. Angry Venezuelan students geared up to stage a fresh rally on Tuesday, the latest in three weeks of anti-government protests that have left at least 14 people dead. (LUIS ROBAYO/AFP/Getty Images) ( 527482884 )

Motorcyclists waving a Venezuelan flag attend a rally in support of Venezuela's President Nicolas Maduro in Caracas, Venezuela, Monday, Feb. 24, 2014. The pro-government rally comes at a time when Maduro's opponents have been staging countrywide protests for almost two weeks against the high crime rate and shortages of basic goods. Maduro has called for a national peace conference this week to address the unrest. (AP Photo/Rodrigo Abd) ( APTOPIX Venezuela Protests )

A supporter of Venezuelan President Nicolas Maduro with his beard reading "Peace", takes part in the "March of Seniors" in Caracas on February 23, 2014. Hundreds of pro-government demonstrators, most of them seniors, marched Sunday in downtown Caracas in support of Maduro. On Saturday, the largest opposition rally had taken place after almost three weeks of students protests, which left ten people killed. (RAUL ARBOLEDA/AFP/Getty Images) ( 527436897 )

Supporters of Venezuelan President Nicolas Maduro participate in a march for peace in Caracas on February 22, 2014. The death toll from escalating anti-government protests in Venezuela jumped to eight on Friday, as President Nicolas Maduro's leftist administration threatened to cut off fuel to areas "under fascist siege." (LEO RAMIREZ/AFP/Getty Images) ( 527412317 )

A Venezuelan demonstrators stay in a street blocked with barricades protesting against the government of President Nicolas Maduro in San Cristobal, capital of the western border state of Tachira, Venezuela on February 24, 2014. A Venezuelan ruling party governor called for the release of all jailed protesters Monday in a rare public split within President Nicolas Maduro's ranks after nearly three weeks of deadly anti-government demonstrations. (LUIS ROBAYO/AFP/Getty Images) ( 527460030 )

A demonstrator protests against the government of Venezuelan President Nicolas Maduro, in Caracas on February 24, 2014. At least 14 people have been killed and 140 others injured in protests nationwide, which have posed the greatest challenge to Venezuelan President Nicolas Maduro's government since he was narrowly elected president last year to succeed the late leftist icon Hugo Chavez. (RAUL ARBOLEDA/AFP/Getty Images) ( 527464237 )