Along with DC, NYC, LA, and Chicago, you could also sight London and Scotland Yard Stats that gun related crimes increased by 60% after their gun ban. Also, read about crime stats in Australia. Sad!
It has been statistically recorded for numerous cities that the increase in gun related crime is directly related to making firearms illegal. One of the telling comments I ever heard was on a news program back in the 1980's when they were interviewing a robber that was busted after months of running around DC kicking in peoples doors and robbing them at gun point. His response to the question about how he could be so bold in his crimes was "hey you are the guys that took everyones guns away, why not, now I know they are all unarmed."
Anyone that thinks that guns are the problems needs to do a little investigating and stop being brainwashed by the anti-gun knee jerk draconian approach. It makes the problem worse not better!