Personally, I've never interacted with a cop who wasn't a lazy, cowardly, meat-headed bully scumbag with little concern for the law and open contempt for his fellow citizens. Villains and thugs every last one.
Have you really had such radically different experiences? I'm a big nerd, totally non-violent. The kind of person who when I was younger and stupider thought the pigs were obviously on my side. Then I lived in nasty filthy violent American big cities for a while, and saw what contemptible gangsters the cops really are.
Are you speaking from lived experience, or from what the bigmedia told you to think about the pigs?