Residents react as policemen take position during an operation in the Mare slums complex in Rio de Janeiro March 26, 2014. Brazil will deploy federal troops to Rio de Janeiro to help quell a surge in violent crime following attacks by drug traffickers on police posts in three slums on the north side of the city, government officials said on Friday.
Less than three months before Rio welcomes tens of thousands of foreign soccer fans for the World Cup, the attacks cast new doubts on government efforts to expel gangs from slums using a strong police presence. The city will host the Olympics in 2016. REUTERS/Ricardo Moraes (BRAZIL - Tags: CRIME LAW TPX IMAGES OF THE DAY)