h/t Willisms. Large, interesting chart is below the fold -
Regardless of that info, I'll keep repeating my gun mantra: Government should focus on disarming the bad guys, not the good guys. Begin with Chicago. Disarming the good guys only creates more helpless victims: Milwaukee Sheriff goes national with message to arm yourself.
Police rarely prevent crime. They cannot be everywhere. Their main job is to find crims after the crime. Your own job is to prevent crime against you and your family.