I agree that it seems like in most cases the cops are escalating in a controlled and thought out manner. Yeah of course the cops are going to tear gas protesters when they are throwing rocks and launching fireworks (literal explosives!) at the cops. But there is also many examples of cops misbehaving, like the people who were shot with rubber bullets while on their own porch! I think the issue comes down to there being 600 different police academies and 1000s of police departments in the US each with different training and policies. Maybe standardization of these policies would help?