If you are interested in stopping the killing, lets ban automobiles. They kill many more people than guns. Cigarettes as well. They kill and serve no useful purpose. And steak knives. It's just maddening how untrained people can kill that easily with implements that are not even in a government database.
Bricks and rocks... don't get me started.
People kill not guns and laws mean nothing to lawbreakers. The police can't protect you. They write the reports as to what wacko did the dastardly deed.