Stand-up comedian Henning Wehn takes over a German class and highlights the importance of the four additional German letters in the alphabet, the ß, ä, ü and ö. Where would Düsseldorf be ...

READ ALSO: German archive puts 850,000 documents on Nazi victims online The Nazis removed all Jewish names from the alphabet tables in 1934. For example, "D for David" became "D for Dora" and ...