The mob howled for vengeance, the missiles raining down on the synagogue walls as the worshippers huddled inside. It was a scene from Europe in the 1930s – except this was eastern Paris on the evening of July 13th, 2014. Thousands had gathered to demonstrate against the Israeli bombardment of Gaza. But the protest soon turned violent – and against Jews in general. One of those trapped told Israeli television that the streets outside were “like an intifada”, the Palestinian uprising against Israeli occupation.