
Originally Posted by
Beckwin
America: Mexicans will ruin our country
England: Muslims/Eastern Europeans will ruin our country
Israel: Palestinians will ruin our country
Italy: Gypsies will ruin our country
China: Uyghurs/Tibetans/Southeast Asians will ruin our country
Some common themes behind that superficiality: perceived economic ineptitude/drain by outsiders, skin tone being indicative of a person's quality, government stoked fears about diseases and drugs, portrayal of the outside culture/people as inherently violent and dangerous.
this culminates in the ability of the powers that be to enforce discrimination, often for economic gain but sometimes just out of spiteful bigotry or political potential, once they have solidified these perceptions in a large enough segment of the public.
Historically, the fuel for stoking the fires often comes from territory disputes/occupations. This would be the case for Israelis, Koreans, and Chinese. The Qing occupation mentioned by GRT is one thing, but it ignores the struggle between Uyghur Turkestan and Mao's China, culminating in the absorption of Turkestan into China rather unwillingly (to this day), and the issue of Tibetan sovereignty. Even America's disdain for Mexicans could possibly be influenced by our history of conflict with Mexico and indigenous/mestizo people in the region (of course, America was the aggressor in these cases... similar to China in some ways).
Now a common xenophobic fear is becoming outnumbered. This is painfully obvious in America and England, and efforts in Israel might be linkable as well. This also occurs in homogeneous Korea, and efforts in China to install large Han populations in areas with large minority presence is telling to Chinese xenophobia sharing this trait, not to mention looming "crisis" of requiring non-Han women for marriage/procreation stoking fears of being outnumbered.
Losing culture/traditional values (having to do with portraying the other culture as inherently violent, inferior, etc) is another very common cause that can be played up. This happens in Korea, China, Japan, America, England, France, etc. Whiteness comes into play here as well; East and West both have a history of preferring whiteness- it shows higher class and economic status. Thus the argument is made that the country doesn't need inferior people, or shouldn't be required to treat them as well/equals.
yeah, that's a lot of rambling, but it touches on a lot of shared causes across what we generally categorize as collectivist and individualist societies. I'm sure a few holes can be picked in what I've said, but there's too much ground being covered to write it off entirely.