Cafod, the overseas aid agency that stands for all that is truest and best in Catholicism in England and Wales, has allowed itself to succumb to a combination of trolling, no-platforming, and the Catholic alt-right – that is, the mad-as-a-hatter version of American Catholicism. It has issued and then withdrawn an invitation to a distinguished American theologian to give a lecture in London – then reissued it after second thoughts – because of the fuss his most recent book might cause.

“No-platforming” means refusing to invite to speak – or having invited, then cancelling – people whose opinions draw strong disapproval.