So, Rowling's apparently a vocal supporter of refugees, in this and countless, other articles.
http://www.upworthy.com/in-1-tweet-jk-r ... n-refugees
I would like to point out a situation, in which affluent people favor boundaries, for themselves, such as this hedgerow. Discussions on narcissism have called it "otherness." It's an exclusive privilege, because who is being inconvenienced. They're all economy-class vehicles and rowhouses.
We might take time to consider this, thoughtfully, since we discuss social interaction and coping mechanisms.
I think an extreme example is the Vatican's thick walls, originally intended to protect against Islamists, although the papacy has come out, against border walls, for you "muggles."
Mundane people, peasants, and vagrants used to be considered subhuman, somewhat akin to a different specie of hominid.
The same psychology is apparent, among gated communities, whose residents tend to be liberal, pathological altruists. Plebeians, somewhat along the lines of a lower order of life, have to live with the demoralizing consequences of liberal indoctrination and be grateful for what table scraps the bourgeois provide.
To borrow an example, from English literature:
http://neovictorianist.blogspot.com/201 ... hropy.html
http://en.metapedia.org/wiki/Telescopic_philanthropy
Please notice that the implication, in the word telescope, is that social problems are being kept at a comfortable distance.
This is also comparable to the Hegelian dialectic, in that you commoners are stuck with the conflict, while authoritarians maintain moral authority. Rowling can probably offer many possible ways of coping with her hedge, and so many thirdworlders, none of which will require any executive function, on your part.