Killer Children? Act of savagery shocks a city. Watch World News Tonight. news_jennings_peter.jpg 60x45 l http://abcnews.go.com/webcasts/videofiles/Video/WNT.ram 10336069343550 abcnews.gif lock_icon.gif video.gif http://abcnews.go.com/webcasts/videofiles/Video/WNT.ram 10336069343551 PLAY lock_icon.gif lock_icon.gif lock_icon.gif headline