Prlatino86 - I agree with much of what you have to say, and I'm impressed at how much you wrote too.
However one point I will dispute is the rules UK cops have to follow. They really are very strict, more so than many other European countries. And I'm speaking from personal experience of a few run ins with them and a good friend being one as well. They aren't allowed to carry guns, even when the armed police shoot someone it's national news, and they are accountable for every move they make.
My friends force recently worked with some US cops who kept commenting on the differences like that. I've seen my fair share of drunken brawls that got pretty nasty when I've been out at night but the cops never even got close to beating them so I don't know what your friend did.
Only thing they do that pisses people off here is all the speed traps.







