see more

Brazilian soldiers keep guard at a checkpoint during a security operation at Praia da Ramos and Roquette Pinto communities, part of the Mare Complex shantytown in Rio de Janeiro, Brazil, on April 1, 2015. Rio's police Wednesday began the sheduled plan of replacing the army involved in pacification tasks in the 140,000 inhabitants Mare Complex slum in a process they expect to end by June 30. AFP PHOTO / CHRISTOPHE SIMON (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)

Brazilian soldiers keep guard at a checkpoint during a security operation at Praia da Ramos and Roquette Pinto communities, part of the Mare Complex shantytown in Rio de Janeiro, Brazil, on April 1, 2015.  Rio's police Wednesday began the sheduled plan of replacing the army involved in pacification tasks in the 140,000 inhabitants Mare Complex slum in a process they expect to end by June 30. AFP PHOTO / CHRISTOPHE SIMON        (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images)