Messrs Bush, Blair, Cameron and now Mrs May chant the same refrain in chorus.
Repeat after them: Islam has nothing to do with it. Islam is a religion of peace. There's no such thing as Islamic terrorism.
There's only Islamist terrorism, meaning that not every Muslim is a murderer. True. Neither did every Russian communist torture and shoot people in cellars. Neither did every German Nazi gas Jews. So don't you dare blame communism and Nazism.
And especially don't you dare blame Islam for any murders committed to the accompaniment of hysterical shrieks "Allahu akbar!!!" For all we know, the choice of the scream is purely coincidental. They could just as easily have shouted "Long live Sweden", "Vive la France" or "God save the Queen".
In keeping with this newfangled ideological piety, the media around the world are manifestly reluctant to identify Muslim murderers as such. Reporters no longer report - they self-censor. And if they don't, they're censored by their editors.
Yesterday three more Muslims drove a hijacked lorry into a shopping mall, this time in Stockholm. It seems as if their entire religion is in need of a remedial driving course: similar incidents have happened in London, Nice, Jerusalem, Antwerp, Berlin.
Chaps, vehicles are supposed to be driven on tarmac, not human bodies. But never mind. Scream "Allahu akbar!!!" all you want. No one will dare say there's anything wrong with your cherished cult.
It has taken the Stockholm police a full day after arresting two of the murderers to acknowledge - while emphasising that the acknowledgement is in no way official - that at least one of them is an Uzbek who might have been affected by jihadist propaganda. Crikey. Who could have thunk.
But at least they did admit, however begrudgingly, that the criminals weren't exactly Swedish Lutherans. The French tend to withhold such admissions altogether.
The murderer was French, they normally say. What kind of French? French is French. Yes, but what was his name? A French name. Fine, but what specifically? Bien, if you insist. Ahmed Abu-Bakr (or some such).
On Tuesday morning an athletic young man stepped out of his window in the 11th Arrondissement, neither the best nor the worst part of Paris. He then scaled the wall of his block of flats and climbed through the window of the flat immediately above him on the top floor.
Having gained entry, he stabbed the flat's owner, a 66-year-old Jewish woman Sarah Halimi, and, while she was still alive, pushed her out of the window. As her body shattered down below he screamed the mandatory "Allahu akbar!!!"
Talking to a French friend last night, I asked him if he had read about the incident. He had, and he even knew that the victim was Jewish. Yet he had no idea that her murderer was Muslim. The French papers merely reported that he was déséquilibré (unhinged).
However, they failed to report that both the murderer and his relations had been harassing Miss Halimi for months, that they were all Muslims and that the neighbours had actually heard the shriek "Allahu akbar!!!" harmonised with the thud of the body hitting the pavement.
The murderer had a police record of verbal and physical abuse, but nothing had been done about it. The police just shrugged in that inimitable Gallic manner and said "Il est fou" (He is mad). Possibly. Probably. But his madness revealed itself within a rather narrow range of activities, with him being perfectly normal outside.
Is it perhaps that the Muslims are so thoroughly integrated in France that they're indistinguishable from other Frenchmen? Eh, not quite. Swarms of Muslims, many of them native-born, live in hellhole banlieues around Paris where the police are scared to go other than in armoured cars.
About 30,000 cars are incinerated there every year, many on New Year's Eve, the Muslim illuminative answer to our Christmas trees. When these people riot, which is often, their battle cries are "Nique la France!" (f*** France) and, well, "Allahu akbar!!!" I dare say the possibility of misidentification is slight.
"Allahu akbar!!!" is thundering all over France.
On Wednesday it accompanied rifle shots fired at a shopping mall in Nantes.
Last week it was shouted in Nice, where a young Algerian attacked passers-by and then tried to hijack a lorry.
In Flavigny, a young chap screaming the mandatory mantra terrorised patients in a home for the handicapped.
In Avignon, another young Muslim terrorised the city centre by walking around and shouting "Allahu akbar - I’m armed and I’m going to kill you all."
Also in Avignon, a 23-year-old man raped a prostitute in broad daylight, while intoning the same old "Allahu akbar", presumably to the coital rhythm.
None of these incidents was directly attributed to Islam. All were ascribed to madness or drunkenness.
My advice to the French hacks is that they should talk to their English colleague Peter Hitchens. He’ll explain to them that all those crimes were caused by marijuana, that evil weed responsible for every one of the 300 million murders the Muslims have committed over history to the sound of "Allahu akbar!!!"
Alexander Boot blogs at www.alexanderboot.com/blog.