I mean, just look at how hard you have to argue to try to make it fit.
If the protestors/harassers that Mitch cites are the Charlottesville demonstrators, then that would have to make Mitch Antifa. But since he's not confronting the protestors with the threat of violence to stifle their free speech, it's facile.
If you want to say he's whining, okay. But this situation bears little resemblance to the other two situations you cite.
Full disclosure: I don't care for Mitch and don't really care about this at all. But your analogy didn't and still doesn't make sense.