In her first appearance as special envoy to monitor and combat antisemitism, Holocaust scholar Deborah Lipstadt said many people and organizations fail to include antisemitism in their “litany of legitimate prejudices” and don’t take it seriously until it is too late. Antisemitism is a unique kind of prejudice, Lipstadt said at the U.S. Holocaust Memorial Museum on May 12. Lipstadt said one of the striking features of antisemitism is that it comes from many different places on the political spectrum. Additionally, many antisemitic people use Israel as a foil for their antisemitism. While Lipstadt said criticism of Israeli policies is...