...Davis Hanson. When the killer of the Dutch filmmaker Theo van Gogh confessed last week, he boasted, "I can assure you that one day, should I be set free, I would do exactly the same." If many progressives in the Netherlands expected the Dutch-Moroccan Mohammed Bouyeri would cite past ill-treatment by Westerners, they were sorely disappointed. Instead, the psychopath icily advised the mother of the murdered van Gogh: "I have to admit I do not feel for you, I do not feel your pain" and "I cannot feel for you. ... because I believe you are an infidel." Thousands of innocent civilians such as van Gogh have been murdered by Islamic extremists — in Darfur, Gaza, India, Israel, Lebanon, London, Madrid, Malaysia, Pakistan, the Philippines, Thailand, Tunisia, Turkey and the United States. The carnage gives credence to the adage that while the vast majority of Muslims are not terrorists, the vast majority of global terrorists most certainly are Muslims. The killers always allege particular gripes — Australian troops in Iraq, Christian proselytizing, Hindu intolerance, occupation of the West Bank, theft of Arab petroleum, the Jews, attacks on the Taliban, the 15th-century reconquest of Spain, and, of course, the Crusades. But...