Honestly, I'm coming over to that side. There's a difference between willing to engage in a dialogue and accept that someone has different views versus someone actively preventing you from engaging in dialogue. If this were an isolated incident and seemed like a lone Antifa fag doing his own thing, I'd argue look the other way. But it's pretty clear that this is their universal strategy and the only response they leave left is retaliation. When someone keeps kicking you and beating you, and has repeatedly and endlessly refused to calm down for a second so both parties can try and resolve differences, it becomes clear that eventually the party being kicked and peacefully taking it should start fighting back.