Brazil's Sao Paulo slums see a return to violence

Nearly 100 police officers are among 4,100 people killed this year in violence on Sao Paulo's outskirts, which had abated. The gang known as PCC is believed to be largely responsible.

SAO PAULO, Brazil — Renewed tension between police and Sao Paulo's largest criminal gang are being blamed for a surge in violence in Brazil's most populous state, where more than 4,100 people have been killed this year, including almost 100 police officers.

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