geauxtohell
Choose your weapon.
He's 24 years old. Been in college since he got out of high school, targeted the military in the theater, booby trapped his apartment to "off the pigs" like a good little OWSer. He's likely a heavy pothead like Jared Loughter is.
This doesn't happen in a vacuum. His mother expected it. Likely he was well known for being a nut for a long time. It was buried because no one wanted to be offensive.
Loughner is a paranoid schizophrenic. Marijuana had nothing to do with his assassination attempt.