Originally Posted by dogcanyon
I also had one guy approach me in the subway, unsolicited, ask to see my metro ticket, and give me the line "Oh, monsieur, this ticket is not valid. You need to follow me (pointing to some dark passageway) and we can straighten this out". I told him in French that there was no problem with my ticket and he got a panicked look on his face and walked off.
The legitimate officers who check for valid tickets never work alone. In fact, I don't think I've ever seen teams of less than 4, and always in uniform (or at least part of the team in uniform).