Thanks Soph, you put that well
People don't think they are heroes, they think they were murdered
You mean the man dressed as an agitator, with the gun, in ready position, following them, increasing in pace, shouting something that may or may not have been heard as medical. Whether he has a fire extinguisher or not is irrelevant, because as you say, if a skateboard can be a lethal weapon, so can a fire extinguisher, in fact probably more so as it can be wielded one handed.
There's no doubt he had "shitty" affiliations, there is photographic evidence, which you seem to be minimising. The Proud Boys are a well known white supremacist group, and have been known for many years. He didn't have to take their money and he didn't have to allow them to make him their hero. You say "may have", despite solid evidence that he "does have"
And as a 17 year old, I'm assuming he was computer savvy, so he will have known what the a ok sign means, my daughter does and she's 9 living in the UK.
You say that there is clear evidence that he committed murder in self defence. And it is "murder in self defence", not just "self defence", because at 17, there is no way he had been vetted to kill unlike a soldier or executioner. And you have refuted the one main point that countless posters have asked you, why was he following them and why did he accelerate towards them if he was scared of them?
And to your point about his genial attitude to aggression directed towards him earlier, you make a point of saying it happened on numerous occasions. I think you're either trolling or you are a white supremacist. Now, if numerous people call you mother fecking white supremacist scum, how long would it take you to get angry?