In the aftermath of October 7, Zionism has increasingly been used by critics of Israel as a term of derision. From university campuses to TikTok and Twitter/X, the term is employed as a self-evident slur that presumes that Zionists are racist and supremacist. Yet, as Adam Kirsch writes in this groundbreaking essay, the challenge for Jews today is not merely to counter attempts to distort and corrupt the meaning and origins of Zionism. The Jewish people, he argues, do not need to defend the term - they need to reclaim it. The Z Word reckons with the current trajectory of a people: in an age in which Jewish existence is under threat, the promise of Zionism is essential.