The police have always had the power to abuse. They rarely did. They were proud pillars of the community. The position of "law enforcement" required, and received, people who were willing to serve, and protect. You might say it was a calling. Sounds a bit mushy, but true. Where did things go wrong?
P.S. I still have the opportunity to associate with some of them.
One last thought, today they sometimes deal with a SOB who is psycho and strung out, very dangerous, not just stoned hippies of yesteryear.