Oozie,
Let me relay a personal story to you to explain why I disagree with the equivocation approach.
A few years back, I was at an ND-Michigan game at the big house. I was wearing a green shirt in the Michigan section but not really openly cheering because I didn't give damn who won. Anyways, at the end of the game, ND scored to take the lead and it seemed they were going to win (they didn't...) and when that happened, a lady in her 70s called me an Irish asshole and slapped me across the chest literally as hard as she could before storming off. My response and my buddy's next to me were to both laugh our asses off. Why wouldn't it be? This woman had absolutely zero chance of harming me, same as the drunk chick who feebly attacked Mixon. Point being, if I had retaliated and harmed that old lady the same way that Mixon shattered that drunk dumbasses face, I would have been ashamed about it for the rest of my life. For something to be self defense, you have to actually feel endangered, not just be able to say they started it. Mixon was not, in any way, shape, or form, in danger here. If he was, he could have easily pushed the woman away, even to the ground instead of breaking 4 bones in her skull.
In the end, the mean old lady got what she deserved by missing the most dramatic comeback victory that she ever would have seen.