Two days after Hamas unleashed a terrorist attack on Israeli civilians in southern Israel, hundreds of British Jews waved Israeli flags and sang the Israeli national anthem, Hatikvah, at a vigil outside Downing Street. The event, organised by the Board of Deputies of British Jews and the Jewish Leadership Council, and attended by the chief rabbi, Ephraim Mirvis, was a powerful show of communal solidarity as the enormity of Hamas’s atrocities was still becoming clear. Now, two weeks after the terror of 7 October, unease is creeping in, amid the grief and shock. “It still looks like the community is...