The movie from South Africa from about 1984, "The Gods Must Be Crazy," seemed to have some similarities--both feature a villainous mixed-race man who leads astray gullible people of entirely black ancestry.
One interesting thing is the theme music played as the KKK rides around killing blacks and other republicans. It was ‘The Ride of the Valkyries’ from Wagner’s ‘Die Valkyrie’. Obviously they did not know in 1915 about the German regime 20 years in the future that treasured Wagner and this music.