About half of them are good people doing a good job.
The other half are corrupt assholes on a power-trip. Miserable fucks who will push their ego in your face by hassling you, giving you tickets and basically being a dick. Just to get a little half-erection by dominating you.
In general I do NOT trust cops at all. Because it is easy to become a cop and so many of them are just assholes wearing a badge. Many of them are extremely macho and have little-cock syndrome.
Lots of them just work as a cop for a few years, do a mediocre job at best, fuck a lot of harmless people over, then they get burnt out, quit being a cop and get a job selling bras to old ladies at Macy's are something like that.