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Men play cards in Rocinha, the biggest favela in Brazil, with over 100,000 residents, in Rio de Janeiro, Br., on Thursday, Jan. 24, 2013. About 3,000 police officers and soldiers moved into one of the largest slums in Latin America early November 2011 in an effort by the Brazilian government to assert control over lawless areas of the city ahead of the 2014 World Cup and 2016 Summer Olympics.