That's always the typical dumb comment in situations like this - "He deserved it. I would have done the same thing."
Yeah well in the real world, you don't just get to assault people because you don't like them. It doesn't work that way. When your boss tells you to do something, do you slap him? If the clerk at the store tells you there's no milk left, do you freak out and punch them? Of course not.
Everyone is so uptight these days when in fact they're hypocrites. Like
@2GooD Productions said - it's a joke. Chris Rock is a comedian. Jeez. If it was Ricky Gervais instead of Chris Rock, Will would have probably shot him.
I really, really, really wish George Carlin was alive.