I think detectives and other police that legitimately solve crimes and help the community should be lauded. Law enforcers can tend to be thugs who like brandishing big sticks though. Sometimes they may start that way, other times they may end up that way due to constantly having to deal with horrible situations and people over and over again. I can imagine it would tend to skew your view of people, thinking that they tend to be worse than they actually are, and that affects how you interact with them. Not excusing, just attempting to understand why someone would choose to be that way. Some are just sadists and awful people, of course, but I don't think that's how the majority start. Probably partially the gang mentality of looking after your own no matter what as well.