Brazil's police officers stand in front of a pool of blood left by the body of a fellow officer who was shot to death in the Rocinha slum, in Rio de Janeiro, Brazil, Friday, Sept. 14, 2012. Diego Bruno Barbosa Henriques was shot and killed overnight Thursday while he and three fellow officers patrolled the slum. Government control over the shantytown is seen as strategic as Rio prepares to host the 2014 soccer World Cup and 2016 Olympics. (AP Photo/Silvia Izquierdo)