The world did not have cops until late in the 19th century. Why did it take 10,000 years after cities started? Clue: It wasn't public demand. It was for public control and protection of an elite at taxpayer's expense. Cops started out with a bad reputation but thru govt. ed and the media that was changed by propaganda. Radio Pictures/RKO made my favorite movies because of real dialogue and scripts that showed it like it was, e.g., the cops in "Maltese Falcon".