Who smiles for their mug shot?

[Racer X]

M A V I C wrote:
I guess I'm no killer so I don't really understand what they're thinking. If I had shot and killed someone, put the gun to the back of the head of a mother and in front of her kids counted down as if I was going to blow her head off, I can't imagine anything making me smile.

A lot of killers aren't quite right in the head. Not insane, just not normal and adjusted.