The UK’s National Union of Students (NUS) has rejected a motion condemning the radical Islamic State terrorist group—also known as ISIS or ISIL—on the grounds that it could be considered “Islamophobic,” sparking a row over the dominance of radical-left groups within the student body. The decision by NUS’s National Executive Committee to shoot down the motion is all the more shocking given that the same body adopted an aggressive bill just over two months ago condemning Israel and calling for a boycott of the Jewish state. The anti-Israel motion was adopted despite objections that it risked alienating Jewish students, who...