Yep same about police actions. Sometimes they are in the wrong and abuse their power, but for the most part they’re doing their job, but if you listen to the media they’re at war with poor people.
Alternatively, if you subscribe to your police / sheriff department FB or Twitter feed or whatever they have, they will often post news about training their staff at such-and-such academy or training center. Looking those places up and reading about what they teach, exactly, can be very illuminating - "killology", for example.
And then there's the Fraternal Order of Police...