> This isn't because police are inherently horrible people, it is because they are normal humans.

Well, you also have to remember that police aren't selected at random from the population. The kind of guy (or gal) who wants to be a cop is often attracted to the power that the job brings. This sets a culture, which is self-perpetuating, affecting the kind of person who they hire, and how people think once they get in.

A few bad apples spoil the bunch - and boy oh boy, we did not get rid of those bad apples in time. It's not a perfect metaphor, of course, but we've been dealing with constant police corruption issues for at least 50 years now. I feel like we gotta try something new.