After hearing about this for days, and even forming an opinion on hearsay, I finally watched the video.
He was wrong.
1. He didn't have to hit her that hard.
2. He didn't have to keep fighting her.
Before I watched the video, I felt that he was justified. Especially when I read that she knocked his phone out of his hand. But he threw a potentially fatal blow on a person who was not his equal size at all. It was not a fair fight, and he kept fighting her. You can argue that it was because she kept coming at him, but what do you expect when you have just been uppercut like that? She probably wanted to kill him. I am sure he was enraged as well when she spit on him, and she deserved some manhandling I agree. But not to that extent.
She gave him an opportunity to take his anger out. If she really was a man, a big guy like him, I doubt he would have been so feisty. It was like beating the sh!t out of a child. Not that she is little, she seemed pretty scrappy to me, but every time he went to assault her, she stood absolutely no chance.
You can even hear it on the bus. At first they were cheering for him, you can tell they were all for it, like hit that b!tch, and throw her off. But he KEPT GOING. HE kept assaulting her instead of subduing her. Then the people on the bus were in shock, and telling him to cut it out. It's almost like it was a big joke to him. The people on the bus were horrified, at HIS actions, when at first they championed him.
I went from thinking he was righteous, to feeling very, very disturbed at his continued violence towards her.