I meant no offense to the Roma people, it's just the term that I have heard used to refer to police who are assholes, get fired and then get to do it all over again with a clean slate.on a new force. (Edit: No offense to any traveling folk either. Feel free to let me know what to refer to the trash police and I'll edit.)
Also check out the podcast Behind the Bastards about Cops... ultimately you're correct but more specifically "cops" or Citizens in Patrol was a "polite" way of saying they were able mob of assholes dragging slaves (willing to bet it didn't matter to them, slave or not) back to their captors. Great podcast