The name 'cop' is a nickname given to police officers, whose traditional uniforms were lined down the front with copper buttons. They used to be called 'coppers,' which soon became shortened to cops.

I think I'm a definite minority in my age group, but I don't have any large problem with cops. Even though I walk around looking like a damned skinhead, they don't give me any trouble. They've helped me out when I needed it and have been pretty cool and understanding when the neighbors call them to shut down our parties.