Shirley Chambers pauses in her Chicago living room, next to pictures of her son Ronnie who was recently murdered, in Chicago, Illinois, January 30, 2013, Chambers had four children - three boys and a girl. Now they're all gone. The single mother will bury Ronnie on Monday. He was the last of her children - all victims of gun violence in Chicago over a period of 18 years. Picture taken on January 30, 2013. REUTERS/John Gress (UNITED STATES - Tags: CRIME LAW SOCIETY)