Definition of Zionism according to Wikipedia, with sources there:

Zionism[a] is an ethnocultural nationalist[b] movement that emerged in late 19th-century Europe to establish and support a Jewish homeland through the colonization of Palestine,[2] a region corresponding to the Land of Israel in Judaism[3] and central to Jewish history. Zionists wanted to create a Jewish state in Palestine with as much land, as many Jews, and as few Palestinian Arabs as possible.[4]

Ethnocultural nationalist want a pure state with as few others as possible? While genociding those others at the moment and also already during the establishment of said ethnonational state?

Sounds fascist enough for me.