“If you believe you’re a citizen of the world,” according to Theresa May, “you’re a citizen of nowhere. You don’t understand what the very word ‘citizenship’ means.”

In the context of the Brexit negotiations, the enduring refugee crisis, the Trump presidency, tabloid xenophobia and the alarming rise in racist assaults since the EU Referendum, this kind of political illiteracy cannot be challenged often enough.

Notions of citizenship are too important to be reduced to the colour of your passport or measured by the extent of your ignorance. Those who are forced to cross borders generally know a lot more about what it means to belong to a society than those who have never left home. And emigration is not always a choice.