In this review of the just published book “On Antisemitism: A Word in History” by Mark Mazower, Omer Bartov, the Dean’s Professor of Holocaust and Genocide Studies at Brown University, lays out well-established arguments on why anti-Zionism is not implicitly antisemitism. Bartov’s elaboration in this piece of the threat of Jew hatred from the right, however, is his most important contribution to this discussion. This is the first of two parts.