If you want to fan the flames, though, add a section for protesters savagely kicking unconscious victims in the head.
What would you even compare instances of police brutality against? Is there some kind of threshold under which you think police brutality is okay? Should there be a rule that each police force gets one free brutalising a year? Or is it just that if their actions are only a little bit of brutality, just a pinch, that they should get away with it?
No one has to ask what to compare it to, because in this circumstance it's a stupid question that distracts from the immediate reality of the situation: Anything adequately described as police brutality that goes uninvestigated & unpunished is unacceptable.