Domestic Violence and Guns.

     Mother Jones is a liberal publication, of course, so if you want to reject the research, there you go.
     The chart comes from a SLATE article about the ex-in law who slaughtered all but one member of his former sister-in-law's family, a man who had been charged with domestic violence and still managed to buy the guns he used.
     Note: Alabama is up there on the top right.