> Why is it just westerners/whites who are expected to cope with a changing population?

I'm living in Shanghai, and I certainly expect the Chinese to cope with my presence. It has been going well so far; at worst I get kids pointing their fingers at me. It probably helps that I'm more a curiosity than part of an invading horde.

Of course if there were a sudden influx of foreigners large enough to significantly alter the population statistics, there would probably be a strong backlash; partly due to the influence on the housing market and partly due to plain racism, but I wouldn't be more accepting of that than if it happens in the west.

Basically, I like having the opportunity of moving to any country I want, so why shouldn't the same hold for anyone who wants to come to my home country?