Agreed - it's a complete non-sequitur, crowbarred in with a tenuous link. And the wizards are far more intolerant.

I doubt Muggle Britain lets everyone in - for one thing, it has approximately the same ethnic composition as muggle Britain, for another, I seem to remember that Hogwarts is one of the best magic schools in the world, in which case parents would move to Britain, increasing class sizes until Hogwarts was approximately the same standard as other schools.

Incidentally, do Wizards in third-world countries have the same standard of living as first-world wizards? If so, they see no problem in letting muggles starve on their doorsteps.

All pissed off about UKIP's recent strong showing in elections?

This may be a slight tangent but I'm amazed (edit: amazed is the wrong word. I'm disappointed) at how the UKIP's performance has made many people lose all sense of proportion, and become thoroughly mindkilled. About half the discussion seems to be 'one UKIP supporter said something rasist/sexist/homophobic'. UKIP has 37 000 members. This isn't just an adhomen attack, its an utterly statistically insignificant adhomen attack.

Worse, a friend of mine who is a lecturer in sociology endorsed a plan to send bricks to the UKIP's freepost address, thus wasting their money. But if the UKIP supporters then send bricks to the left-wing parties, then all parties lose money and the postal system slows down. I would have thought a lecturer in sociology would understand about not defecting and keeping the moral high ground, but apparently I was wrong.