Hollywood is smack in the middle of one of the most notorious sheriff's departments in the United States [1][2] with lots of ongoing prosecutions and a history of federal convictions. They know exactly how bad the police are and show a idealized version in media that's very fictional.
If the writers introduced the so-called good guys as the Grim Reapers or Compton Executioners [3], the viewers wouldn't believe it.
I should have "not nearly as fictional". I know some of it's true, some of it's 'ripped from the headlines', some is rumor, but nothing Hollywood does is ever entirely accurate. Even the documentaries (maybe especially the documentaries)
If the writers introduced the so-called good guys as the Grim Reapers or Compton Executioners [3], the viewers wouldn't believe it.
[1] https://knock-la.com/tradition-of-violence-lasd-gang-history...
[2] https://en.wikipedia.org/wiki/List_of_LASD_deputy_gangs
[3] https://en.wikipedia.org/wiki/Compton_Executioners