What to do indeed. They'll pull all sorts of stealth attacks to goad you into responding, then claim you started it. They'll claim anything they do is self-defense, anything you do is a threat, even if it's video of them doing the attack.
They will exempt themselves from all rules and laws, yet hold you accountable for every rule and law.
So the question is how do you deal with it? Because if you show weakness, they will maul you like a pack of wolves.
Pearl clutchers need not apply.