"Gun control" is a job-safety program for criminals.
Rounding Up the Guns por John R. Lott Jr.:
.. guns do make it easier to kill people, but guns also make it easier for people to defend themselves. The defensive argument is especially important for people who are weaker physically — women and the elderly — and for those living in crime-infested neighborhoods, such as poor blacks in urban areas. Criminals are overwhelmingly young males who are physically stronger than their potential victims. Police are extremely important in deterring crime, but they understand that they almost always arrive on the scene after the crime has been committed. Simply telling people to behave passively or to defend themselves in some other way is not very good advice. Having a gun is by far the safest course of action for those left to confront a criminal alone.
I really wish that I could point to something that seems to work here .. The big question that people have to ask when examining a law is, who is most likely to obey it? If the law-abiding, good citizens are the ones most likely disarmed by the law, the law can actually make crime rates worse.