Their goal is to subject us to Sharia, but although they are willing to use violence, and have done so on many occasions, they prefer to work incrementally, over a span of generations, gradually inserting themselves into our political and legal system and using the levers of our open society against it.

Most notably, they tried it in Egypt. They have also tried it in Syria and in many other Arab countries; that is why the Muslim Brotherhood has been banned across the Middle East.

The fact that it is not banned in Britain explains why, a few weeks ago, the United Arab Emirates announced that it would no longer allow its citizens to study at British universities. The risk of Islamist radicalisation was too great.

Whoever is responsible for these latest arson attacks, in symbolic form, they act as a reminder of the consequences of tolerating the deeply intolerant Muslim Brotherhood.

Historically, all the major jihadi groups, including Al Qaeda, Islamic State, Hamas and even the Islamic Republic of Iran, were inspired by the Brotherhood, with some being direct offshoots of the group.

Through our inexcusable naivety, we have nodded and smiled while this Islamist organisation and others like it – Iran’s Revolutionary Guards are not banned in Britain either, and the Ayatollah’s London office remains open – have embedded themselves in our society and taken strategic steps to overturn it.

You couldn’t have designed a better symbol for the clash of civilisations brewing in Britain – Jake Wallis Simons

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Which brings me to their western enablers. The Trafalgar Square row is a case in point. Anybody who knows anything about the duplicitous Muslim Brotherhood understands that massed prayer is an expression of subversive political strength.

They have used it across the Middle East, and that is why such gatherings are repressed in most Arab countries. When it happens in Britain, however, the establishment rises up in defence of those who seek to destroy us.

Why are you singling out the Muslims, they say? Why are Jews and Christians allowed to pray in public without these anxieties?

The obvious answer – that Jews and Christians don’t blow themselves up on Tube trains or use public prayer as a show of revolutionary strength – seems to elude them. When are these people going to wise up? Honestly, they will pursue their dogma of Niceism to the grave.

It’s not like we haven’t been warned. Arab states, particularly the Emiratis, have been begging us for years to take the threat seriously.

Important voices like my friend Ed Husain, the former extremist turned courageous voice of sanity, have been desperately drawing attention to signs of growing Islamist dominance in Britain. Why do we ignore them? Do we not want to survive?

The firebombing of the ambulances is a case in point. We saw it in the Manchester synagogue stabbings and, in all likelihood, we have seen it again: unbridled antisemitic incitement has consequences.

Ever since October 7, our country has been debased by weekly carnivals of Jew-hatred on our streets, powered in large part by the Muslim Brotherhood and its allies. Yet when Suella Braverman labelled them “hate marches”, it was she who was silenced rather than the racist agitators.

Once again, even as the ambulances smoulder, the same propaganda is all over social media. If the Jews hadn’t tried to defend themselves against the jihadi hordes of Hamas and the Islamic regime in Tehran, if they had simply rolled over and joined Kier Starmer in bleating that vanquishing your enemy is “against international law”, they claim, then ambulances would not be firebombed in London.

Such are the foul consequences of lies. Such is their weaponisation. Such are the results of fanning the flames of hatred for years or taking no action when it happens under our noses.

There was no “genocide” in Gaza – which genocide features evacuation warnings and humanitarian aid? Which genocide involves soldiers fighting hand-to-hand in tunnels to avoid harming civilians when the Strip could easily have been levelled from the air? – just as there are no “war crimes” in Iran.

Saturate people’s brains with footage of the appalling sufferings of war, however, and deceitfully frame it as evidence of atrocities, and lies have borne the fruit of hatred. Even our political leaders are not immune.

With one eye on the Muslim vote, which is increasingly functioning as an anti-democratic sectarian bloc in a contribution to our social decline, the Prime Minister recognised a state of Palestine with the Israeli hostages still in the catacombs, earning the open congratulations of Hamas.

About ten days later, two Jews were killed in Manchester, again to the great satisfaction of the jihadis in Gaza. When David Lammy turned up to offer his condolences, he was heckled by the grieving Jews of Manchester, and with good reason.

What does all of this amount to? Simple: Britain faces a choice. Either we find the courage to look the Islamists in the eye and tell them that enough is enough, or we see the disappearance of our Jewish community and the gradual fall of our democracy. If that sounds alarmist, look back at history.

Read the 2015 government report on the Muslim Brotherhood, which labelled the group a national security threat and yet resulted in no action.

As Israeli Prime Minister Golda Meir famously said, “they say we must be dead, and we say we want to be alive. Between life and death, I don’t know of a compromise”.

Does Britain wish to stand on the side of the ambulances that seek to save us, or the arsonists who fetishise blood?

Disturbingly, the country is finding it hard to make up its mind.