In September, writing on his New Republic blog The Spine, Peretz homed in on a familiar villain: Islamic terrorists who target other Muslims. “Frankly,” he wrote, “Muslim life is cheap, most notably to Muslims.” He got himself wound up: “I wonder whether I need honor these people and pretend that they are worthy of the privileges of the First Amendment, which I have in my gut the sense that they will abuse.” Nicholas Kristof began his Sunday New York Times column by denouncing the post; Peretz’s sentiments, he wrote, showed how “venomous and debased the discourse about Islam has become.”