That's a good start, but I'm guessing that when 16-year old Crips get their hands on a gun there wasn't a psych eval involved. And this is what I mean, you start asking about that, and the NRA folks throw their hands in the air and say "well we can't do anything about that, so you should arm yourself!"
I hate that shit.
ETA: Yea, I don't get why 1 gun isn't enough for protection.