AdvertisementUnease In Sprawling Rio Slum Ahead Of Police 'Pacification'August 09, 2013Lulu Garcia-NavarrofacebookEmailA police officer patrols the rooftop of a school at the Rocinha slum in Rio de Janeiro, Brazil, on Sept. 20, 2012, where a "pacification" anti-crime effort was underway. Rio police are now going to attempt a similar pacification in another huge slum, Mare. (AP)