Donald Trump plays into that bizarre American obsession with 'safety'. You paint America as a dangerous place where before even catching a train you have to be persuaded that it is a safe thing to do. You then demand a president who will make America safe as well as 'great' again.

Which means what? What would it look like for America to be 'great' again? Or 'safe' again? We don't get answers – just the usual perversity when it comes to asserting that more accessibility to more guns will magically make everyone safer.

Well, Americans will have to do their own business in the face of its Faustian pact with democracy in November. But, this impacts on the UK, too. Before leaving for a break I did an interview with BBC Radio 5Live in the wake of the murder by IS crazies of an elderly priest in France. Not exactly heroic, these criminals, are they? I mean, choose your targets.

The line of questioning put to me was that churches in England will now have to increase their security. What advice would I now be giving to my churches? I think my response must have been very disappointing. Increase vigilance and learn to look differently at what is going on around us, but don't go mad, start erecting fences or putting sentries on our churches. As if.

Isn't this what terrorists want us to do – be terrorised?

But, the main reason for rejecting some vast increase in security of buildings is that, as I think I put it, you can't legislate for total security. Furthermore, no one has the resources of money, time or people to provide anything remotely approximating total security. In the end, total safety is not something anyone can secure. Not even Donald Trump.

Our churches should open their doors and welcome people in. Yes, as happens already, someone should keep aware of who is there and who might be lurking around outside – especially if they are carrying knives and have their face covered. Yes, anything suspicious should be noted and, if necessary, the police alerted. That is common sense.

But, the first casualty of the current horrors should be the lie of total safety. History is littered with demagogues who promised safety and security along with renewed greatness. Their names are known to us. While understandable that in times of great fear and uncertainty people look for security and the promise of simple certainty, we should beware of the disillusionment and destructiveness that can follow when the empty and unachievable promises are seen for what they really are: a fantasy.