When the leader of Germany’s Jews spoke out against the flow of Muslim migrants to Europe, a rabbinical student denounced his views as racist — and ignited a debate over whether Jews are right to fear unprecedented levels of immigration from Muslim lands traditionally hostile to Israel. The student, Armin Langer, was kicked out of the Abraham Geiger College in Potsdam after he wrote that the leader of Germany’s Central Council of Jews was wrong to seek a cap on Muslim immigration. Langer, a founder of an inter-faith group called Salaam-Shalom committed to fostering dialogue between Muslims and Jews, said...
