While it's difficult to speculate as to what's going on inside a person's head (and thus is kind of futile to argue, regarding any particular individual, "that guy is a racist!" or "that guy isn't a racist!"), I don't think it's entirely an issue of, "these police just hate black people, they're racist and they're picking on/shooting/maiming black people for shits and giggles" etc. The problem is related to race (for reasons already discussed) but is not solely about race. During the George Floyd protests over the summer, there were demos in western cities like Salt Lake City, and small hick towns populated mostly by white people. People who lived worlds away from the "inner city" found that this movement spoke to them enough that they were going to actively participate in it, but why? What spoke to them about the movement, what could they relate to?
I think it's because people are tired of being exploited by law enforcement officers who treat them with no respect, undermine their rights as a citizen into account and prey on them for "revenue generation".
From the Justice Dept report on the Ferguson Police Dept:
"Ferguson’s law enforcement practices are shaped by the City’s focus on revenue rather than by public safety needs. This emphasis on revenue has compromised the institutional character of Ferguson’s police department, contributing to a pattern of unconstitutional policing, and has also shaped its municipal court, leading to procedures that raise due process concerns and inflict unnecessary harm on members of the Ferguson community . . . The City’s emphasis on revenue generation has a profound effect on FPD’s approach to law enforcement. Patrol assignments and schedules are geared toward aggressive enforcement of Ferguson’s municipal code, with insufficient thought given to whether enforcement strategies promote public safety or unnecessarily undermine community trust and cooperation. Officer evaluations and promotions depend to an inordinate degree on “productivity,” meaning the number of citations issued . . . This culture within FPD influences officer activities in all areas of policing, beyond just ticketing. Officers expect and demand compliance even when they lack legal authority. They are inclined to interpret the exercise of free-speech rights as unlawful disobedience, innocent movements as physical threats, indications of mental or physical illness as belligerence. Police supervisors and leadership do too little to ensure that officers act in accordance with law and policy, and rarely respond meaningfully to civilian complaints of officer misconduct."
The point is that it's possible to recognize major problems with the way American LEO operate and advocate structural reform without even necessarily getting into the race issue at all. Some major reforms need to implemented regarding the role police have in our society (and the inner workings of some of these municipal governments) and the way they conduct themselves, i.e. they should actually behave like public servants and not petty shake-down artists who expect all of the power and none of the responsibility, who think that they're above the law and can violate people's constitutional rights with impunity. Like NYC's "stop and frisk" program back in the day, it's horrendous that you could simply be walking down the street in your own neighborhood and have some state-sponsored thugs accost you, put their hands and you and treat you in a demeaning fashion simply for existing, and I think I can condemn that kind of disgusting behavior without even mentioning race.