Cain did not use a gun to kill his brother Abel. He could have used his bare hands, a stick or a rock. He had murder in his heart. The means by which he killed his brother were available to everyone, yet only Cain used them. Depriving an entire population of the right to keep or bear firearms because someone might decide to kill someone is ludicrous. What weapon will, by its own volition, get up and kill someone? Not one! Stop blaming the object! You have a right to not have a firearm. Your rights do not supersede mine.