Ain't no cure for stupid and if you think banning guns will prevent violence you are just plain stupid! I don't know the solution to an out-of control-crazy going bonkers and killing people but disarming me, a handicapped, 66 year old who lives alone is no acceptable solution.
Now don't try to twist what I say and say that I'm defending the shooter, far from it, but if a person is this disturbed they need help before it gets to this point. They suffering and it is a terrible to do nothing for them. BTW if I understand it correctly, autism is not a mental illness it ts a cognitive disorder and I've never hard of it provoking violence before.
Quit power-grabbing (Obamacare) and look at ways to provide help for these individuals