I don't remember if the DMV status is actually FOP, or something else, but I knew a lawyer who worked with a police union who had this status. But that's just icing on the cake compared to stuff like https://en.wikipedia.org/wiki/Law_Enforcement_Officers%27_Bi...

I have a friend who's a union leader (as in actually runs a sizeable union) and, in the eyes of most people, a straight-up socialist. He convinced me public sector unions are a horrible idea precisely because of the above. I had known about the above, but I always had trouble squaring my support for the right to unionize with the problems with public sector unions. He basically gave me permission to call a spade a spade.