Ok, this is a direct repost of my response to the article "36 shot in 36 hours in Chicago" form a while back cause this is completely relevant to THIS.
"The problem isn't guns. The problem is the south side. Crippling poverty most people can't imagine. Houses without roofs, just tarps. ---- looks like Detroit. And the rest of the region isn't so great either. Get on any train that isn't going north and look outside. For the majority of the trains things just get progressively dirtier and run down as you go. Downtown's great, one of the best places in the world. If you can afford rent... I can afford the several thousand a month but most can't.
If you waived a magic wand a Chicago and cast a "No one but cops have guns" spell on the metro area that wouldn't solve the problems that motivate people to kill. You' have to get a second wand for the drug industry. And a third for housing. And a fourth for jobs. And a fifth for cultural momentum. And a sixth for education quality. And a seventh for health care."