I click on your link and the video looks suspicious, but I also have no clue who made it or who all those people are. Rex Chapman has a checkmark next to his name, but so do plenty of vacuous trolls. Inserting violent actors seems like a good way to discredit a protest, but "makes sense" isn't evidence.
So I typically end up just waiting a week or two for ostensibly fact-checked coverage and being out of the loop because there's so much uncertainty around developing events. But it feels like choosing feckless over reckless, so it's not a totally satisfying route.