So, do you agree, then, that protesters need to not yell at the police?
My definition of a peaceful protest would include not yelling at the police. And I think Romans 13 is very clear how we must not diss ones in authority.
In one case, on the news, I saw how a higher ranking officer communicated, asked them to keep the six o'clock curfew, and he took a knee and the demonstrators were encouraged by that. But I have not verified how things really worked, later. So, for all I know, you might be right to say that, later, things could have broken down. But anyone who obeyed would not be out there to get trouble.
I suppose demonstration leaders could meet with the police and work out their strategy for exactly what to do if bad actors start dissing the police and start trying to embroil the peaceful ones in things. Maybe do something like this > train the peaceful ones to do a specific action, when bad actors try to mess things up. They could form files six feet apart, and if anyone tries to push them around, they can be captured. Maybe form files, all take a knee, and then officers and soldiers can move through the files and get the ones making trouble.
If ones still invent ways to mess with that, that is not the fault of the peaceful ones or officers. Of course, evil people can find ways to mess things up. And they will likely not respect any method or negotiating. It was like that in the times of negotiating with native tribes > ones were honorable, while others could care less about keeping any treaty.
So, I suppose you can train people how to be still while officers comb out the bad actors. But you would need to put officers on notice that they must not molest anyone who is being still and on a knee, or whatever. They could comb through the files.