1937's "Black Legion" tells a story of a man's involvement with what amounts to the Klan without coming out and calling it that. Humphrey Bogart stars as Frank Taylor, a working man who loses a bid to become foreman when a foreign-born man gets the job instead. The Legion is right up Taylor's alley, reinforcing his belief that his woes are all the fault of the foreign-born. He gradually gets more immune to the violence as he gets in deeper and deeper with the Black Legion. It really is a very good vehicle for Bogart's acting talent as his morality gradually unwinds. The sermon at the end seems a little tacked on, much like a similar scene in 1933's "Wild Boys of the Road", but it doesn't detract too much from the overall film.
Review of Black Legion
