Like every profession there are good ones and bad ones.
I am probably heading towards a law enforcement career at some point after I finish University.
I will say it before and I'm saying it again. When my Great Grandad walked the beat in London, everyone knew he was a cop, everyone knew he was there to keep everyone safe. The criminals knew that he was out there watching, and they knew, should they start, he will finish.
Cops are there to clean up the streets, there are all sorts of lowlifes out there wanting to rob, rape, murder, tag and burgle anything and everything. And besides responsible gun owners, they are the only line of defence against them. So everyone who gives police officers crap, just remember, they are there because you need them. If you did something to get his attention, unless he is bent or otherwise incompetent, you are in the wrong.