AbstractSince the Nazi seizure of power in Germany in 1933, German Zionists initiated a public debate about the racial meaning of Judaism. Drawing on scientific racial, sociological, and anthropological definitions that emerged within Zionism since the late nineteenth century, these Zionists tried to counter Nazi accusations against Jews. However, as the Nazi propaganda against Judaism became widespread, aggressive, and dehumanizing, Zionists responded by traversing the academic outlines of racial categories, and popularized a constructive racial image of Jews, thus hoping to rehabilitate their status and consolidate Jewish identity.