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A protester is arrested by military police from the special unit Chope late on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732636 )

Demonstrators try to overturn a bus late on June 19, 2013 in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732946 )

A demonstrator walks downtown Niteroi, near Rio de Janeiro, on June 19, 2013, during a protest against the $15 billion being spent on this month's Confederations Cup and the 2014 World Cup. Protests initially sparked by a hike in bus fares in Sao Paulo last week, quickly spiraled into nationwide marches against corruption, fueled by anger that -- in a country with a wide rich-poor divide -- billions of dollars were being spent on stadiums and far too little was earmarked for social programs. TASSO MARCELO/AFP/Getty Images ( 520726464 )

Thousands of demonstrators march in downtown Niteroi, near Rio de Janeiro, on June 19, 2013, during a protest against the $15 billion being spent on this month's Confederations Cup and the 2014 World Cup. Protests initially sparked by a hike in bus fares in Sao Paulo last week, quickly spiraled into nationwide marches against corruption, fueled by anger that -- in a country with a wide rich-poor divide -- billions of dollars were being spent on stadiums and far too little was earmarked for social programs. TASSO MARCELO/AFP/Getty Images ( 520726488 )

A demonstrator walks with a Brazilian flag late on June 19, 2013 in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732706 )

A military police from the special unit Chope shoots with a tear gas gun late on June 19, 2013 to disperse protestors during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520734706 )

Riot policemen walk next to a fire barricade in downtown Niteroi, near Rio de Janeiro, on June 19, 2013, during a protest against the $15 billion being spent on this month's Confederations Cup and the 2014 World Cup. Protests initially sparked by a hike in bus fares in Sao Paulo last week, quickly spiraled into nationwide marches against corruption, fueled by anger that -- in a country with a wide rich-poor divide -- billions of dollars were being spent on stadiums and far too little was earmarked for social programs. TASSO MARCELO/AFP/Getty Images ( 520725274 )

A military police from the special unit Chope uses a tear gas gun late on June 19, 2013 to stop a protestor during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. . CHRISTOPHE SIMON/AFP/Getty Images ( 520732520 )

Protestors face the police on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732987 )

A demonstrator runs from tear gas gunshots fired by military police from the special unit Choque late on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732648 )

Demonstrators hold a banner before clashes late on June 19, 2013 in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732938 )

People rally late on June 19, 2013 in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732694 )

A demonstrator faces military police from the special unit Chope late on June 19, 2013 in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732713 )

Riot policemen try to extinguish a fire barricade set up by demonstrators in downtown Niteroi, near Rio de Janeiro, on June 19, 2013, during a protest against the $15 billion being spent on this month's Confederations Cup and the 2014 World Cup. Protests initially sparked by a hike in bus fares in Sao Paulo last week, quickly spiraled into nationwide marches against corruption, fueled by anger that -- in a country with a wide rich-poor divide -- billions of dollars were being spent on stadiums and far too little was earmarked for social programs. TASSO MARCELO/AFP/Getty Images ( 520725266 )

A demonstrator holds a flag late on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732951 )

A demonstrator holds a flag late on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732923 )

A demonstrator flashes the victory sign as military police from the special unit Choque advance late on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732921 )

Military police from the special unit Chope arrest a demonstrator on June 19, 2013 during clashes in the center of Niteroi, 10 kms from Rio de Janeiro. Protesters battled police late on June 19, even after Brazil's two biggest cities rolled back the transit fare hikes that triggered two weeks of nationwide protests. The fare rollback in Sao Paulo and Rio de Janeiro marked a major victory for the protests, which are the biggest Brazil has seen in two decades. CHRISTOPHE SIMON/AFP/Getty Images ( 520732983 )