Defiance is the trait I see most clearly in those representing themselves as Second Amendment fundamentalists. That whole “pry it from my cold, dead fingers” stuff is nothing more than coat-trailing, and the oft-repeated assertions that “good guys” need guns to protect others, and themselves, is mere chest-beating.

Mr Trump positively radiates defiance, much in the style of a cornered raccoon. It’s not a good look in a head of state whose country is unlikely to be invaded any time soon.

School shooters who leave some account of their motives also display defiance — getting back at those who have done them wrong.

But the normal response to any display of defiance is hostility and violence. And away you go.