This is the grotesque genius of his attack on Columbia, which operated like putting a dead body on a car for all to see – so long as each university president sees their job in isolation, and their possible defiance in isolation, all arrows point towards silence. He wins without even having to fight.

But what if he did have to fight? It is not at all clear that Trump will pull funding. He hasn’t attacked Wesleyan, Princeton, Delta, Liberty. This isn’t an oversight: he wants the ground of the debate to be at Columbia, to be conflated with Gaza-Israel, to be complicated by questions about protests and student discipline and the nature of Ivy League education.