Any guy who feels the need to Mike Tyson KO a female is suspect. His reaction was way above and beyond anything that was called for.
That being said.. This happens far too frequently nowadays. I'll readily acknowledge that if I'm an older poster with daughters and grew up in a different era, that I don't see how anyone could justify any of this...at all. ...but the reality is, when it comes to trash talking, anger issues, s e x and violence; men and women are on very equal footing in 2016.
Go to any club/bar/social event with people under the age of 35 and you'll likely see, at some point over a period of time, a woman throwing hands at a man. A woman instigating violence with a man. What should the man do?... CLEARLY, we should act like men and use our likely stronger frames to stop them WITHOUT laying a hand on them in the form of a closed fist. That's where being a man, with integrity comes into play. Something a lot of younger guys also lack nowadays.
With that said, I also don't feel a ton of sympathy for her in an event where she allegedly called him a n***a, shoved him as he turned to walk away and then swung on him (however weak that swing may have been).