You cannot fortify your way out of a hate problem. You can only survive it more comfortably while it festers. A synagogue with better locks is still a synagogue whose congregants get spat at on the way to shul. A school with a higher fence still has children inside it who know exactly why the fence is there. Security spending treats the target, not the source – and treating only the target, indefinitely, is not a strategy. It is a subscription. There is a version of Winston Churchill’s line about appeasement that applies here almost too neatly: an appeaser, he...