I'm the last one to agree with Warrior, but you guys are being fucking stupid.
Blaming the "proximate cause" is ridiculous, and I can't believe I actually feel the need to explain why:
If you brought a bunch of friends to a shooting range, and one of them runs out to his target in the middle of an "open fire", and gets shot and killed, you are the proximate cause. Are you to blame? No, your friend is for being a fucking moron.