The speed of change has been mesmerising. Indeed, lacking any real sense of overarching identity, the need to impose a sense of community has become paramount. Whether locally or, as we see, nationally, never have we heard the word community so bandied about. But it’s all pretend, really. Community was never talked about before, simply because it didn’t have to be. 

The trouble with well-educated, international people like [Kristian] Niemetz is they fall into the trap of meeting foreigners who are much like them except for the accent and assume cultural differences stop there. Of course, if you hang out with academics and white-collar professionals it doesn’t matter if you’re in Berlin, London, Singapore, or Rio de Janeiro, it’s all the same.

But if you live beside someone who has no reason to get up in the morning and decides to play music at full blast until 5am, or deals drugs in the stairwell of your apartment block, or uses it as a toilet, or keys your car on a regular basis, all of a sudden you realise the character of your neighbour becomes central to your quality of life. The only reason Niemetz doesn’t know his neighbour is because the latter is culturally conditioned to be considerate, and to get up at 7am each morning to go to work. If he wasn’t, I suspect Niemetz would know him intimately.

If you start dispensing with old-fashioned ideas like sovereignty and believe a neighbour is no different from a Brussels bureaucrat, you’re going to be in a for a rude awakening when diversity and vibrancy moves in next door. Of course, those who advocate such policies rarely have to live with the consequences.

Given the self-satisfied ignorance on display – or malign perversity – I’m guessing Dr Kotsko doesn’t live in a neighbourhood rapidly being enlivened with Congolese and Somali borra gangs, whose social skills, and machetes, are so much in the news here.

Schama showed something a lot of us had suspected – which is that for a certain type of globe-trotting international celebrity, any concern for borders, national identity and cultural continuity are not just beneath them, but actively ‘common’.

Of course, like so many other advocates of mass immigration, Simon Schama can live pretty much where he wants. And if the area around him goes somewhat downhill because the neighbours all start to come from the rougher corners of Eritrea, then Simon Schama can move. And he will probably move to a very nice area. But not everybody has that choice.

And one thing we can all be certain of is that Simon Schama will never choose to live in Bradford, Malmo or any of the (dare I say it) ‘suburbs’ outside Paris. Yet all the time he will urge other peoples’ neighbourhoods to more closely resemble those great success stories, and look down at people from an ever-loftier height when they dare to object.