MY FRiend, let me further your education and share what few people know.
Being of Irish descent, me father and me grandfather were enforcers of the law and it was explained at an early age I wasn't to use the word 'cop' when referring to an officer of the law. No reason was given just don't use the word.
It was years later I learned of the connection between 'cop' and coprophilous. Evidently schools produced a better product in the early 20th century, the vocabulary's were of a higher level and insults approached the level of art.