Anti-Zionism is opposition to Zionism. Although anti-Zionism is a heterogeneous phenomenon, all its proponents agree that the creation of the State of Israel in 1948, and the movement to create a sovereign Jewish state in the region of Palestine—a region partly coinciding with the biblical Land of Israel—was flawed or unjust in some way.
Before World War II, opposition to Zionism was common among Jewish communities. Secular critics viewed Zionism as a form of nationalism inconsistent with Enlightenment universalism, while some Orthodox groups opposed it on theological grounds, regarding the establishment of a Jewish state as contingent upon the arrival of the Messiah. Support for Zionism increased during the 1930s as conditions for Jews rapidly deteriorated in Europe due to the rise of Adolf Hitler and Nazi Germany, and Zionism began to prevail over opposition to it in the Jewish diaspora. With the Second World War, the sheer scale of the Holocaust was felt and support for Zionism increased dramatically. After 1948, anti-Zionism shifted from opposition to the creation of a Jewish state to rejection of the existence of Israel itself, with many postwar movements advocating its replacement by an alternative political entity. Most Jewish anti-Zionist movements subsequently disintegrated or transformed into pro-Zionist organizations, although a minority, including the American Council for Judaism, continued to oppose the ideology. Outside the Jewish community, opposition to Zionism developed primarily among Arab populations, particularly among Palestinians, who associated it with the Nakba.