I saw a longer video (maybe not the full one) that showed him turning around and engaging with them a couple of times, and someone threw what looked like juice at him - didn’t seem to be the bottle, just the liquid, and then he pushed past several people to punch that specific woman. I don’t think he can claim self-defense even if they had pushed him down before, because he walked pretty far to get to her without anyone attacking him or even stopping him.
You can be critical in a productive way, and you aren’t. It’s post after post of “Joe Biden Bad,” without any discussion of how to push for meaningful change that might make for a viable third party or a more progressive Democrat party. There’s a reason a ton of people have you blocked. When all you do is criticize, it’s only barely better than the obvious shills trying to get the left to vote for spoiler candidates or stay home, except at least they’re probably getting paid.