Well everybody does have the right to bear arms. I know most people use them responsibly, but there are those that don't. Hence you have the kids that shoot each other with Dad's gun that was left in the nightstand with a full clip, because what good is a gun if it's locked in a safe. You have the guys that get drunk and go do some target practice in an unsafe area. Of course most of the guns used by criminals were taken from homes or cars of honest citizens that had the guns for protection. They can run a background check to try to be sure you're not a criminal or a looney, but they can't run a check on how stupid you might be. Therein lies the problem.