I learned similar lessons about police when I was a kid. We would get burglarized almost every year by the same house down the street. Every time we called the police they would show up a day later and spend most of their time doing nothing and trying to blame us for getting robbed. They cared so little about actual crime.
At the same time some cop from the same department wrote up my brother for "Riding a motorcycle on the sidewalk while not wearing a helmet on his bicycle, crossing a street (Pedestrian) without a walk sign, and running a red left turn in a car. He got 200 hours of community service because the judge (Not really a judge but some ticket approver clerk) decided he didn't care if it made sense. He was doing community service next to a guy that beat and robbed an elderly woman who got 40 hours instead...
Then we moved to a different city and the sheriffs there were GREAT. You would meet them out and about and they would say hi and hang out. They actually cared about their jobs and spent their time keeping the community safe. Report a car stereo stolen to them and they would set up stings and bait cars! For a car stereo!
The first city was leasing their cops from a notoriously bad city next door. The second city funded their own Sheriff, spent tons of money on them to keep them well trained, and was super politically active (Mostly retirees). Both cities were within 50 miles of each other.
Consistency of police in the USA is all over the place. I think the ACAB movement is missing something. They are alienating the groups that can actually make a difference with policing. The LEOs who are actually good at their jobs and the people who honestly cherish them. At the same time I know what kind of cop they are really after!