The horrendous attacks on women in Cologne, Germany, on New Year’s Eve have exposed a deep crack in the façade of radical multiculturalism. On one side are radical feminists who argue that sexism, no matter how innocently expressed, must be vigorously repressed. On the other are the mavens of racial and ethnic identity politics who preach that Muslim refugees must be exempt from too much censure for sexual assault, lest we be guilty of “Islamophobia.”