The right to protest is baked into the first legal document the country as a political entity wrote. For the last 250 years politicians and cops have had the knowledge that Americans care a great deal about their right to stand in front of a statehouse and shout to their heart's content. They should create their own policies to deal with that fact. If that means ensuring no roads go near the statehouses, that there's ample space around popular protest spots, hell that there's guaranteed public restrooms in those areas, so be it. It also means that cops should have 250 years of collective knowledge in how to deescalate... But instead they've always gone the violent route (remember the 60s, when young black people were being shredded by police dogs?)
Now that being said, black lives matter in particular suffers from (in my opinion) a lack of leadership and organization. Over the weekend I wanted to attend protests. I have 100 surplus masks and shitloads of water bottles I wanted to give out. But after a straight hour of searching on every social media platform I could conceive of (as well as Google and just asking on Twitter) I found nothing but out of date websites, with articles from the beginning of the black lives matter movement.
If I want to donate money, I can choose between several different variations of the name "black lives matter," with no way to verify that these are representative organizations, or where the money goes.
During the protest (I just turned up at city hall and hoped for the best - it happened to work out), I didn't see any sort of leadership. Sure some local community leaders turned up, but nobody that represented any sort of modern iteration of a black rights movement.
Far be it from me to tell people how to best accomplish social goals - in my opinion raw, unfettered, and disorganized rage is a perfectly valid outlet for the people against the crimes of the American police system. I just feel like organization could only help.