After the Manchester massacre… yes, and after Nice and Paris, Mosul and Abu Ghraib and 7/7 and the Haditha massacre – remember those 28 civilians, including children, killed by US Marines, four more than Manchester but no minute’s silence for them? And of course 9/11…

Counterbalancing cruelty is no response, of course. Just a reminder. As long as we bomb the Middle East instead of seeking justice there, we too will be attacked. But what we must concentrate upon, according to the monstrous Trump, is terror, terror, terror, terror, terror. And fear. And security. Which we will not have while we are promoting death in the Muslim world and selling weapons to its dictators. Believe in “terror” and Isis wins. Believe in justice and Isis is defeated.

So I suspect it’s time to raise the ghost of a man known as the Emir Abdelkader – Muslim, Sufi, sheikh, ferocious warrior, humanist, mystic, protector of his people against Western barbarism, protector of Christians against Muslim barbarism, so brave that the Algerian state insisted his bones were brought home from his beloved Damascus, so noble that Abe Lincoln sent him a pair of Colt pistols and the French gave him the Grand Cross of the Legion of Honour. He loved education, he admired the Greek philosophers, he forbade his fighters to destroy books, he worshipped a religion which believed – so he thought – in human rights. But hands up all readers who know the name of Abdelkader