Doesn't excuse the bastards that kill people that say things that hurt their pwecious fee-fees. (Not implying anyone here is saying that, of course. I'd like to think most people here are far more level-headed than that.)
Honestly, I think the whole "he provoked me" thing shouldn't...really factor in very much, at least not in any legal way. Seriously, if I'm having a conversation with someone, and someone else hears me say "yeah, and Jesus was a goat-fucker like the rest of his Bronze Age contemporaries," and they get all pissy and attack me, they shouldn't be able to use the claim "he provoked me" as any sort of defense. That's the kind of logic a child uses, "he made me mad, so I hit him." You still made the choice to attack me, you should still get the shit beaten out of your ass by the legal system. Its like that "crime of passion" bullshit you hear from time to time: hubby find wifey fucking another guy and, in his idiot rage, he kills them both. "Oh, but he wasn't thinking clearly! He was all angry and stuff!" He still made the choice to pick up the loaded shotgun, aim it at his wife and her fuck-buddy and pull the trigger. Unless he is verifiably, legally nuts, then he should be held as responsible for his actions as a man who simply shoots his wife for insurance money.