I'm not linking directly, because the content is too vile. But if you really want to, click TED 2008: How Good People Turn Evil, From Stanford to Abu Ghraib then the link marked "previously unseen photographs from the Abu Ghraib prison in Iraq"
This sorta ties into the death penalty thread, really. Is systematic torture and abuse of "bad people" okay? Especially if they'd get the death penalty anyway under one set of arbitrary rules? Be sure to check the images out before replying, btw.