Earlier quoted context omitted.
I truly don't understand the problem here. Can you tell me what it is that makes these people dangerous and scary, but the similarly armed protestors who showed up at government buildings a month ago — or, frankly, the police — fine?
The police follow orders from their chain of command that goes up to an elected official. You can petition the elected official, occupy their building, grill them in the media, and vote them out if you convince the other citizens. For example the knee-to-the-neck move was a part of the "orders" in that it was part of standard procedure and it is now being revised and removed. Similarly the tear gas was part of the pr…
The point of these protests is that the violence is not occasional. It is endemic, and attempts to stop it stretch back centuries. It has persisted across the country, under both progressive and conservative politicians, despite many, many attempts to eliminate it.
If the violent system we have has successfully resisted change and accountability for hundreds of years, how is this a regression?