Oh, come on, sure they are.  The media are always full of spectacularly successful partnerships of mental illness and guns.  At least, that's what the NRA says.

And to the editor of this pissant little forum: if my comments about guns and tragedy offend you, good.  I average 3+ likes per post.  How many other regular posters do?  I don't have the data to check, but you can.  Bet you few or none.