How much longer can it go on? Deaths caused by terrorism are always followed now by candlelit vigils, a minute’s silence, victims’ families/ government ministers/emergency services/clergy/imams all clustered together, walls of messages and flowers, flags at half-mast. Instinctively, I feel uneasy because the meaning of it all gradually suffers attrition, and also, perhaps, because it asserts a solidarity which isn’t quite there.