Twenty years ago, Ayatollah Khomeini called for the assassination of Salman Rushdie—and writers around the world instinctively rallied to Rushdie’s defense. Today, according to writer Paul Berman, “Rushdie has metastasized into an entire social class”—an ever-growing group of sharp-tongued critics of Islamist extremism, especially critics from Muslim backgrounds, who survive only because of pseudonyms and police protection. And yet, instead of being applauded, the Rushdies of today (people like Ayan Hirsi Ali and Ibn Warraq) often find themselves dismissed as “strident” or as no better than fundamentalist themselves, and contrasted unfavorably with representatives of the Islamist movement who falsely claim to be “moderates.”