I spotted the film on the blog Afro-Germanica Online. It's a short film about black man who endures racist talk from a German woman.
Schwarzfahrer (also known as Black Rider) is a 1993 German 12-minute short film directed by Pepe Danquart. It won an Academy Award in 1994 for Best Short Subject. The topic of the film is the daily racism a black man endures in a tram. The title is a word-play: literally, "Schwarzfahrer" means "black rider" in German, but is also translatable to "fare-dodger". This word-play forms the punch line of the short film. (Source: wikipedia.)
An interesting film with a O. Henry twist, so bare with it and you will laugh at the end.