I seem to recall something about Hitler claiming that Superman was Jewish.
After the attacks on Pearl Harbor in December 1941, America entered World War II, and so did Superman. In Siegel and Shuster's comic, Clark Kent tries to enlist in the Armed Forces, but he fails the routine medical examination,. Clark accidentally uses his X-ray vision to read the next room's eye chart. Distraught, he muses, "I've got the most perfect body the world has ever known, and through a sad trick of fate, the army turns me down as hopeless!" This feeling of desperation and despondency was felt across the country. As news of the Nazis' murderous Holocaust plan emerged, American Jews felt utterly powerless to help their European brethren.The Man of Steel's Jewish roots
Word of Superman and his ethnic undertones did not escape the enemy's notice in real life. Josef Goebbels, the Nazi Minister of Propaganda, denounced Superman as a Jew. In April 1940, Das Schwarze Korps, the weekly newspaper of the Nazi S.S., attacked the comic and its Jewish writers:
"Jerry Siegel, an intellectually and physically circumcised chap who has his headquarters in New York. . . The inventive Israelite named this pleasant guy with an overdeveloped body and underdeveloped mind "Superman.."
Here were Nazis wringing their hands over a cartoon character cooked up by a couple of boys across the sea. Yet this ideologically driven rant actually touched on something vital--the importance of Shuster and Siegel's Jewish heritage.