“We break into an area and kill the ones who are threatening people.”David D. Kirkpatrick, “Shiite Militias Pose Challenge for U.S. in Iraq,” New York Times, September 16, 2014, http://www.nytimes.com/2014/09/17/world/middleeast/shiite-militias-pose-challenge-for-us-in-iraq.html?_r=0.