Gangs bring anarchy to Brazil's biggest city

"The violence that terrorised Sao Paulo, Brazil's most populous state, in recent months has returned, with powerful criminal gangs setting fire to courthouses, incinerating buses, attacking banks and throwing...

Gang violence grips Brazil state

"Overnight, gangs torched buses, targeted banks and maintained their attacks on police patrols and stations. At least 23 people were killed in the latest fighting, officials said. "