> Most troubling of all, I am seeing many people openly advocating the police should have shot more protesters or brutalized them in some manner.

I've seen lots of people ask questions like “where were the tear gas and rubber bullets?”, but I think you are missing the point of those and other references to the behavior of the police during BLM and other protests if you interpret them as a call that the violent behavior should have been repeated.

They are, in at least most cases, using the restraint shown in the attempted coup where top government leaders were targeted to highlight what they see as the inappropriateness of the violent response in earlier protests and the hollowness of law enforcement claims that the force used in those earlier events was reasonable, necessary, and justified rather than motivated by racial and political bias.