In this Friday, Aug. 29, 2014 photo, a teenage girl from the Santa Marta "favela" slum exits a police car as she takes the hand of an officer who patrols her neighborhood, as she arrives to Copacabana for a group debutante ball organized by her slum's Pacifying Police Unit in Rio de Janeiro, Brazil. The ball, which relied on volunteers who coiffed and made up the girls and a formal wear shop that loaned the dresses, helped build goodwill between pacified favelas' residents and the officers who patrol them. (AP Photo/Silvia Izquierdo)

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