Hollywood has never been afraid to sacrifice realism for the sake of an entertaining story. And since pretty much every movie or TV show features the police in some way, we as an audience get fed a lot of total horseshit about how the law works and how cops operate in the USA. But as most of us are on the outside of the judicial system (for the moment) we usually don't even realize that what we're being told is incorrect.
One of the small comforts of watching a movie is knowing that, yeah, those guys might be idols up on the big screen, but off-camera they're probably just like the rest of us: 30 pounds overweight, living in an abandoned semi-truck cab and selling weed for denture money.
Being a movie villain is not easy. Nobody respects your work, everyone loves your sworn enemy, and cheers if he straight up murders your ass. Of course, the villains deserve it, right?
Writing a movie is hard work, and when all is said and done, there are always going to be a few small subplots that get ignored in the third act. But sometimes a filmmaker forgets an important plot thread.