bk613, that’s fair enough. You’d be entitled to criticize them and they might, on the same token, criticize you for not supporting their efforts.
The non-contextual videos of however many seconds long only shows the protesters reacting to the violence heaped upon them by the authorities — prior to any of them engaging in any altercation with anyone. The part where the uniformed officers started a fight with the peaceful protesters is omitted from the video you are presented by outlets that made editorial choices in what to inform you and what to omit.