It's a low bar, but all the copaganda shows (CSI, Castle, Brooklyn 99, Bones, etc) for obvious reasons. Even the heckin' wholesome funny NYPD detectives in B99 talk about defense lawyers being scum, all suspects being guilty (otherwise they wouldn't be suspects, would they?) and of course even when they did touch on the rampant racism in the NYPD the solution was "be a better pig and change from the inside!" (Don't laugh!). I could go on about the others too, but it's a topic that's already been covered better by other people
Long post short, even light-hearted cop shows where Malcolm Reynolds plays a goofy man-child writer have dogshit politics