Police officers patrol the Rocinha slum after violent clashes between drug gangs, in Rio de Janeiro, Brazil September 29, 2017. The banner reads: "The Rocinha asks for peace."

Police officers patrol the Rocinha slum after violent clashes between drug gangs, in Rio de Janeiro, Brazil September 29, 2017. The banner reads: "The Rocinha asks for peace."

© 2017 Reuters/Bruno Kelly