Let’s further say that what you fear most is the day when there might be somebody who needs killing but you have no ready way to make that happen, because the laws have been changed so that you no longer may legally own weapons that allow you to kill with a single adrenalized finger-twitch—and since these weapons are not legal anymore, you will no longer own them, because you (who will brag you have massacre weapons in case you need to someday murder the U.S. government) are law-abiding.