We can’t become used to this kind of terror

After the very latest mass casualty attack on Saturday night, on a busy London North Eastern Railway train in Huntingdon, police and government quickly told us not to speculate about the motives of the alleged attacker.

Eleven people were hospitalised in the attack, with one in a critical condition at the time of writing. It’s hard not to speculate when a banal experience most of us are familiar with – a train journey – is brutally upended in this way.

It is hard to ignore the fact that we are seeing more and more people with no ideology resorting to extreme, often spontaneous violence

But we must stop there, apparently, to be told by some politicians that the enemy is not the maniacs who increasingly threaten us but the danger of speculating about their motives.

While counter terroris