Furtwängler became musical director of the Berlin Philharmonic in 1922, holding the post until 1945 and again from 1952 to 1954. His tenure coincided with the Nazi era. In the 1930s, he chose to remain in Germany, viewing himself as a protector of German music. He accepted sponsorship from Joseph Goebbels, prompting denunciation by Arturo Toscanini and others. An offer to conduct the New York Philharmonic was withdrawn after public outcry.
He helped and protected many Jewish musicians during the Holocaust. After World War II, he was de-Nazified and continued to conduct, including a filmed Don Giovanni at the Salzburg Festival in 1955, released posthumously. The film Taking Sides later dramatized the US accusations against him.