Eleven years ago, a writer for Harper’s wondered what would happen to Farrakhan if I ceased writing about him. I ceased, and Farrakhan seemed not to notice. In fact, his brand of anti-Semitism became, if not acceptable, then unremarkable. In her forthcoming book, “Antisemitism Here and Now,” the Holocaust historian Deborah E. Lipstadt gathers some of the more idiotic statements made by leftist Americans about Jews and, especially, about Israel. The country is routinely denounced as racist, colonialist, fascist and, of course, as segregated as South Africa in the apartheid era. None of this is true.