controversy and efforts to spike her story. david? pierre thomas live from washington. pierre, thank you. and from chicago at this hour, newly released police body cam video of a fatal shooting. it s causing outrage. the video showing maurice granton shot in the back by police after appearing to run away from them, and then laying there for several minutes with no one giving him aid. what police tonight say happened beforehand, and we should warn you, the video is disturbing. here s alex perez from chicago. reporter: tonight, growing questions for the chicago police department after the release of this controversial body cam video. it shows the moments leading up to an officer shooting and killing 24-year-old maurice granton jr. saw my son, maurice granton jr., my dna, my blood, just get murdered in cold blood by chicago policemen. reporter: in the video, which is difficult to watch, granton is seen running from police, attempting to scale a fence when an officer opens fire.