The problem is when the law turns predatory. I've seen several attempts to imply that black people must be at fault for their own problems because they "commit more crimes" than other groups. But what's happening is the system is set up so that they can be arrested illegally just to make a quota, and then prosecutors can plea-bargain them out on some lesser charge or chose to have a trial they could never hope to afford to fight. The result is massive plea-outs that distort the actual crime rates while the courts, cops, bail bondsmen, prisons, and related services rake in hundreds of millions of dollars a year while keeping surplus labor off the market. If they tried these shakedown scams in affluent neighborhoods with lawyer money there would be outrage and the police station would be shut down.
White-collar criminals usually get off with reduced sentence for crimes that steal billions from taxpayers vs. some homeless guy who pees in an alley and gets locked up as a sex offender, but the Security State will confiscate the assets of Mom & Pop small businesses for making "suspicious deposits" when it's obvious no crime has been committed. Why is there a war on drugs? So they can raise money through price inflation, concentrate it dealer networks, and then take it when the scam is ripe knowing full well someone else in dire straits (who can't get a normal job because of a criminal record) will happily step up to fill the void in demand.
I get labelled anti-cop for pointing this stuff out, but what I'm trying to say is that cops have an impossible job. They are working under the assumption that their employment has something to do with public safety, but in reality they are forced to perform wealth extraction and enacting increasingly totalitarian policies as their efforts to make a safer society fail.