Like Russia does?
No, like the US and Western "democracies" don't ever ask if their citizens want more foreigners. If they do, I must have blinked and missed it.
BTW, according to PF posters, Russia is a "tyranny" so no sense in using it as a reference.
I am going to guess that the kids in the UK are told very often how good it is that your country, like the US, is no longer white. You know, white is evil. Once the ruling mob invests all they have in this sick philosophy, there is no going back. As maf just said, ..."but true believers refuse to let it go".
I have never been to Serbia but something tells me that their kids are not fed this kind of poison. Instead, they are told the greatest blasphemy ever that Serbia is for Serbs - but I could be wrong. of course.