He was 23 years old, and killed 32 people. 32 backwards is 23.
My clock says 20:03. 20 + 3 = 23.
The prophecy. (I have yet to see that movie, but it's Carrey, it's probably tossycock)
(Looking at the people on this board, no, I'm not serious)
The gun laws in the USA are absurd. Anyone can get a weapon legally without any hassle.
The only forbidden thing is to have it concealed in public.

(And shooting someone, of course. But guns are made for killing.)