[quote=Ghirardelli]
We allowed to play Coppers, Gumshoes and Gmen?
[/quote]

Yes, absolutely, you can play detectives and special agents. Both types, grease or legit. Feds especially - In pre-Prohibition days, Mafia-feared Feds were agents of the Secret Service, the Federal Bureau of Narcotics and the Postal Inspection Service. During Prohibition, they were agents of the Treasury Department. After Prohibition, the FBI gradually - and reluctantly - turned its attention toward the Mafia.