It is a catch 22. Mentally ill people in this country are ignored at every level until they do something that gets media attention. You can be mad as a hatter and pass a background check if you haven't had a major episode yet. Casting everyone that owns firearms as a lunatic is probably comforting if you live where that basic right is denied so it is easy to understand why so many people are in favor of disarming the U.S. Either way our initial ideas of liberty and freedom have been getting legislated away since the beginning and I have no doubt that the second amendment will fall.