I was thinking specifically:
Patricii - The Congresscritters-For-Life, the exceptionally wealthy and politically connected, etc.
Equites - The police, upper military officers, appointed government functionaries, celebrities, etc.
Proletarii - The rest of us, and any of the above that don't "play ball," so to speak.
Servi - The incarcerated .
Liberti - Freed convicts now deprived of rights.