FIFA President Sepp Blatter said Brazil may have been a poor choice to host the 2014 World Cup if the competition is disrupted by protests similar to those that occurred during the Confederations Cup.
"If this happens again we must call into question if we made the wrong choice in the allocation of proof," Blatter told the German agency DPA.
Hundreds of thousands of Brazilians took to the streets during the FIFA Confederations Cup in June, to demand better public services and challenge the costs of organizing the World.
At the end of the FIFA Confederations Cup held talks with the Brazilian government, says Blatter and Brazilian officials "are aware that the World can not be disturbed."
FIFA President will return to discuss the matter with President Dilma Rousseff in September.