Riot policemen stand on a street in front of a torn Brazlian flag during a protest against the 2014 World Cup in Porto Alegre June 12, 2014. REUTERS/Marko Djurica (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST TPX IMAGES OF THE DAY)

A policeman shoots tear gas at protesters during a demonstration against the 2014 World Cup in Sao Paulo, June 12, 2014. REUTERS/Marco Bello (BRAZIL - Tags: CRIME LAW POLITICS SOCCER SPORT TPX IMAGES OF THE DAY CIVIL UNREST WORLD CUP)

An anti-government demonstrator takes part in a protest against the 2014 World Cup in Rio de Janeiro June 12, 2014. Brazil exploded with street parties as its soccer team won the World Cup's opening game on Thursday but scattered violent protests were a reminder that many locals remain angry over the billions spent to host the tournament. REUTERS/Pilar Olivares (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST) 

Police detain a protester during a demonstration against the 2014 World Cup in Sao Paulo, June 12, 2014. REUTERS/Marco Bello (BRAZIL - Tags: POLITICS SOCCER SPORT TPX IMAGES OF THE DAY CIVIL UNREST WORLD CUP) 

Police officers detain an anti-government demonstrator during a protest against the 2014 World Cup in Rio de Janeiro June 12, 2014. REUTERS/Pilar Olivares (BRAZIL - Tags: CRIME LAW SOCCER SPORT CIVIL UNREST WORLD CUP)

A Brazilian soccer fan walks past military police at the entrance of the Tatuape metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)

A wounded demonstrator is detained by riot police during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

A masked demonstrator walks during a protest against the 2014 World Cup in Rio de Janeiro June 12, 2014. (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST) REUTERS/Lunae Parracho (BRAZIL - Tags: CRIME LAW SOCCER SPORT TPX IMAGES OF THE DAY CIVIL UNREST WORLD CUP)

Riot policemen detain a demonstrator during a protest against the 2014 World Cup in Porto Alegre June 12, 2014. REUTERS/Marko Djurica (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Riot policemen detain two men during a protest against the 2014 World Cup in Porto Alegre June 12, 2014. REUTERS/Marko Djurica (BRAZIL - Tags: SOCCER SPORT CIVIL UNREST WORLD CUP)

A demonstrator uses an extinguisher against military policemen (not pictured) at Tatuape metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

A riot police officer sprays tear gas at people during a protest against the 2014 World Cup in Rio de Janeiro June 12, 2014. REUTERS/Pilar Olivares (BRAZIL - Tags: CRIME LAW SOCCER SPORT CIVIL UNREST WORLD CUP)

An anti-government demonstrator dressed as Batman yells slogans accompanied by passengers on a bus, during a protest against the 2014 World Cup in Rio de Janeiro June 12, 2014. Placard reads "We want to be the champions in healthcare, education and not just in football." REUTERS/Pilar Olivares (BRAZIL - Tags: SOCCER SPORT WORLD CUP TPX IMAGES OF THE DAY)

A military police officer reacts after police released teargas to disperse demonstrators at the entrance of the Tatuape metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)

A demonstrator holds a sign as he protests from the top of a structure during a public screening of the 2014 World Cup opening soccer match between Brazil and Croatia at Zocalo Square in downtown Mexico City June 12, 2014. The sign reads, 'Free political prisoners' (top) and 'FIFA go home! Mexico with Brazil'. REUTERS/Tomas Bravo (MEXICO - Tags: CIVIL UNREST SPORT SOCCER WORLD CUP) 

A photographer is detained by the military police inside of Tatuape metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Chico Ferriera (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

A military police advances on a photographer inside of Tatuape metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

A demonstrator protests against FIFA during a rally against the 2014 World Cup in downtown of Belo Horizonte June 12, 2014. REUTERS/Sergio Moraes (BRAZIL - Tags: SOCCER SPORT CIVIL UNREST WORLD CUP)

Riot policemen stand behind burning rubbish during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

A demonstrator is detained by riot policemen during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST TPX IMAGES OF THE DAY)

A woman is pushed by riot policemen during a clash with demontrators in a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Media take pictures as military police clash with demonstrators (not pictured) near Caarao metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: POLITICS MEDIA SOCCER SPORT CIVIL UNREST WORLD CUP)

A demonstrator takes cover behind a piece of wood during clashes with police while protesting against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

Military policemen move on during clashes with people protesting against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

A demonstrator throws a tear gas bomb after military police shot at demonstrators during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: POLITICS SOCCER SPORT CIVIL UNREST WORLD CUP TPX IMAGES OF THE DAY)

Demonstrators help carry a woman following clashes with police during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. Brazilian police and protesters clashed in Sao Paulo on Thursday just hours before the opening game of the World Cup, which has been marred by construction delays and months of political unrest. Police fired tear gas and noise bombs to disperse more than 100 demonstrators angry about heavy government spending on the event, a spokesman for Sao Paulo state's military police said. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Riot policemen with shields walk towards demontrators during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Riot policemen fire tear gas against demonstrators during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST TPX IMAGES OF THE DAY)

Riot policemen fire tear gas against demontrators during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Lunae Parracho (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Media take pictures of a demonstrator facing riot policemen during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST MEDIA)

A demonstrator faces riot policemen during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Demonstrators try to gather their musical instruments duirng a clash with riot policemen during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

Riot policemen fire tear gas at demontrators during a protest against the 2014 World Cup in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP CIVIL UNREST)

A journalist working for CNN is taken to an ambulance by emergency services after being injured in clashes between demostrators and mlitary police during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST MEDIA TPX IMAGES OF THE DAY)

A journalist working for CNN receives medical attention after being injured in clashes between demostrators and mlitary police during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Ricardo Moraes (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST MEDIA)

A demostrator walks near to tear gas fired by mlitary police at demostrators near Caarao metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

Military police clash with demonstrators (not pictured) near Caarao metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST)

Media take pictures as a demostrator stands in front of Military police near Caarao metro station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST MEDIA)

Policemen secure the area before gates of the Arena de Sao Paulo are opened for spectators of the opening match of the soccer World Cup between Brazil and Croatia in Sao Paulo June 12, 2014 REUTERS/Damir Sagolj (BRAZIL - Tags: SOCCER SPORT WORLD CUP)

Associated Press photographer Rodrigo Abd who was injured by riot police, is assisted while sitting in a petrol station during a protest against the 2014 World Cup, in Sao Paulo June 12, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP POLITICS CIVIL UNREST MEDIA)