Wikipedia
Anti-Zionism is opposition to Zionism, broadly defined in the modern era as the opposition to the ethnonationalist and political movement of Jews and Jewish culture that supports the establishment of a Jewish state as a Jewish homeland in the territory defined as the historic Land of Israel (also referred to as Palestine, Canaan or the Holy Land) or to the modern State of Israel as defined as A Jewish and Democratic State.
The term is used to describe various religious, moral and political points of view, but their diversity of motivation and expression is sufficiently different that "anti-Zionism" cannot be seen as having a single ideology or source. According to many notable Jewish and non-Jewish sources, anti-Zionism has become a cover for modern-day antisemitism, a position that critics have challenged as a tactic to silence criticism of Israeli policies.