Let them try...
Consider that the US government deems what we want (no more police brutality) unacceptable, by definition, we need to work outside the system to solve the problem.
It's similar to 2a people I've met that think that somehow the constitution guarantees their right to overthrow the US government if it becomes tyrannical. That's absurd. The US government would never let itself be overthrown. There's no internal system for such a thing.
Fyi this is an example I often see spoken of, and then when it gets linked to it's actually a man that was charging at protesters with a sword unprovoked.