Stop breaking the laws you are supposed to uphold, you fucks.
The problem isn't the officers who break the law, but the police commanders that defend them. The majority of people would not care about police breaking the law if there were direct and legal consequences for the officers on a fairly consistent basis. There is a minority that would hate the police even if cops who break the law are consistently held legally accountable just because they believe in collective judgment and demand perfection from other groups that their own could not provide.
Groups like BLM are part of the problem on police reform. When Castro died, BLM mourned him because he gave refuge to known cop killers. What is even worse, Castro was precisely the sort of leader domestically that is the stuff of BLM nightmares in terms of police brutality. Think stop and frisk over guns and drugs is bad? How about stop and frisk over having extra cans of beans? That literally happens in Cuba all the dang time. The fact that BLM has not be totally marginalized and ridiculed into obscurity by opponents of police brutality because many of them have blinders that make them sympathetic is part of why the movement isn't getting much traction.