It's not really crime that bothers me. It's innocent people getting killed by guns.
The research paper "WOULD BANNING FIREARMS REDUCE MURDER AND SUICIDE?" by Don Kates LLD and Gary Mauser, Ph.D. published in the Harvard Journal for Law and Public Policy, vol30.num2., as well as others, have found NO correlation between the availability of guns and either the homicide rate or the suicide rate. Do your research!