Very true people too often take the movie example of cops as real. Thing are not as bad in England as US but getting there rapidly as @dannyshine shows.
There are a very few good apples. From my experience on cop who unfortunately passed are from a heart attack at only 52. He had thousands of people walk his beat in his memory. He was a fair and decent human, I can across in may time he was very fair and kind. If I was intoxicated (legal or illegal) he would say go home and always give you an option. He let us party as long as it was not disturbing others RIP!
But this experience has massively been out weight but the bad nasty cops I have come across! He was a protector an example of what police should be but unfortunately that example has gone now and the police are getting increasingly thuggish and violent here in the UK too, but still people think of them has authority !