I might come across as crass, but shouldn't he use the male restroom if he is presenting as male? I do agree that a punch was a bit too harsh, but I don't think he was discriminated against. A man walks into a woman's washroom, and is assaulted by a woman, would I be surprised? Probably not. The perpetrator of the assault did go too far, if the insults hurled at him were about him being trans. Please tell me if I'm wrong about this; I'd be happy to revise my post if necessary.