In the prison cell when Freddie is walking on Dirkman's back, if you look on the cell wall behind him, you'll see graffiti of a Nazi swastika on the wall. The movie takes place circa 1930 and the Nazi symbol didn't even exist (at least in America's consciousness) until the late 1930's-1940's. Correction: The swastika was used as good luck symbol long before the Nazis. It was a common Native American symbol of good fortune and was on the official patch of the 45th Infantry Division of the US Army prior to 1930. So it's use as graffiti is not impossible.