One day in 2010 I was walking in downtown Berkeley and came across a group of people projecting a video on the wall of a building. The footage was low-quality and colorless, but the subject - radio chatter voice-over and an exploding van, bodies flying - was arresting. "Just fuckin,' once you get on him just open up - Roger that... - Let me know when you've got them. Let's shoot." "Light 'em all up. Come on, fire!" "Keep shoot'n, keep shoot'n'" "Got a bunch of bodies layin' here." "Yeah, we got one guy crawling around down there, but, uh, you know, we got, definitely got something." I later learned this was footage of US airstrikes in Baghad on July 12, 2007. The video, Collateral Murder , was published by Wikileaks and shows a live feed from Apache helicopters gunning down 16 people, including two journalists, and injuring two children. Chelsea Manning (then Bradley Manning), a 22-year-ol...