Sarah Hurwitz was treated like a celebrity at the Jewish Federations of North America’s General Assembly in Washington in November, and her remarks connected to her new book, As a Jew : Reclaiming Our Story from Those Who Blame, Shame, and Try to Erase Us , received enthusiastic applause. But it didn’t take long for hostiles—the same blamers, shamers, and erasers of her subtitle—to focus on one moment from her appearance and use it to vilify her. A speechwriter for President Barack Obama before