At the end of 1932, Lang started filming
The Testament of Dr. Mabuse.
Adolf Hitler came to power in January 1933, and by March 30, the new regime banned it as an incitement to public disorder.
Testament is sometimes deemed an anti-Nazi film as Lang had put phrases used by the Nazis into the mouth of the title character.
Lang was worried about the advent of the Nazi regime, partly because of his Jewish heritage,
[13] whereas his wife and screenwriter
Thea von Harbou had started to sympathize with the Nazis in the early 1930s and joined the
NSDAP in 1940. They soon divorced. Lang's fears would be realized following his departure from Austria, as under the
Nuremberg Laws he would be identified as a Jew even though his mother was a converted Roman Catholic, and he was raised as such.