The Manchester Arena bombing in which 22 young women and girls were blown to pieces for wanting to see Ariana Grande. It was the response to this murderous, misogynist, atrocity that convinced me that British is no longer a serious country, but rotten and hollowed-out, with all the appearances of a functioning nation-state, but really an empty husk, culturally, socially and "spiritually" speaking.
The response of the emergency services was woeful, in a familiar and particularly modern British way: a deadly combination of box-ticking, risk aversion, interdepartmental confusion, sloth, buck-passing and incompetence was displayed by MI5, the police and ambulance services.
What really struck me way the way in which government and media tacitly agreed to reframe this intentional act of mass murder as a sort of natural disaster, or Act of God. The mawkish "Don't look back in anger" became the unofficial anthem of this massacre. If a nation agrees to not become angry when 22 young woman are murdered by a politically-inspired fanatic, then it is no longer worthy of regard as a functioning polity.
I remember that the immediate - and customary - media response was handwringing about a possible islamophobic backlash, of which there was of course none.
Compare with the Dunblane massacre: the day after the government and people united in basically banning guns. Things have changed
We are not a serious people.