Kurt Gerron (May 11, 1897 - November 15, 1944) was a German Jewish actor and film director during the Nazi period. Born Kurt Gerson to Jewish parents in Berlin, Germany, Gerron initially studied medicine but became a stage actor in 1920. He appeared in such films as "The Blue Angel" opposite Marlene Dietrich, and on stage originated the role of Brown (the chief of police in London) in the premiere production of "Die Dreigroschenoper" in Berlin in 1928. Wikipedia
The definitive Wikipedia entry for Kurt Gerron. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Kurt_Gerron
Gerron fled to France (because he was jewish), then settled in Amsterdam in 1933. He was arrested by the SS in 1943 and was sent to Theresienstadt in 1944 to direct a staged documentary intended to persuade world public opinion that Jews were well treated www.imdb.com/name/nm0314777/