In Brazil the fucking Police are especially brutal. This is a consequence of the Military Dictatorship (1964-1988), during which the Police were used to contain any type of public event.
The video that you will see shows how the Brazilian fucking Police treated students during ​a demonstration against the rising price of bus tickets.
http://www.youtube.com/watch?v=oLllUyIBrGY&feature=player_embedded 