Brazil just smashed Spain 3-0 inside the walls of the stadium but many Brazilians did not care at all. They were not there to celebrate nor cheer their national team but to fight against the waste of public resources in football instead of spending them in social programs.
While the players kicked the pointless ball around the field, thousands of protesters and police forces fought a fierce battle. The tear gas unavoidably reached Maracaná Stadium, affecting part of the public.
The demonstration began cheerfully at Plaza Saens Penha, some two kilometers away from the stadium, under applause of the neighbors. They chanted "Maracanós" (i.e. Maraca-us) and accused Governor Sérgio Cabral (PMDB) of being a dictator.
However just hundreds of meters away from Maracaná, the clashes began as some protesters apparently attacked the police line. The 18,000 police and military personnel deployed responded with tear gas, rubber bullets and it seems that also live fire.
A group of protesters attempted to assault the building of the Brazilian Football Confederation (CFB).
Seven people were injured: five civilians and two police agents.