It seems he was under the care of various therapists.
(And why are the killers always the handsome ones? Do you see what a little philanthropic sexual intervention could have prevented? “Take a Nerd Home Tonight.” Maybe the Department of Health and Human Services can launch a public awareness campaign. Nerds make for attentive lovers, and for reasons I can’t explain, they’re always the best hung.)
Fluorine-based Selective Serotonin Reuptake Inhibitors place the brain into a dream state in which the patient doesn’t know what’s real. They are not in their right minds to the precise degree as if they were temporarily insane. (And that is a criminal defense ripe for the plucking, by the way. There is plenty of research that indicts these SSRI’s.)
The problem here is not guns. The problem here is drugs.