Japan and South Korea are much clearer examples of in-country which has consistently and very direct dismissed multiculturalism. This was established on 70-, 80-, 90es and this confirms day by day. The United Nations has through many years tried to press them to receive refugees but the number of refugees has been one thousands of what UN asked for.
Europe has never elected to drive psychological or economic warfare against them (Japan and South Korea) for this reason (as they do against European nations/individuals with same arguments and principles)
Multiculturalists are extremely uncomfortable when you mention Japan and South Korea cause these nations prove quite openly that mass-immigration only is a result of specific Marxistiske doctrines and very rarely economically or culturally beneficial. Japan/South Korea has a limit and border guards.
If one lacks the visa one is denied entry ... ( Europe used to have similar laws prior 1950-1960 )
The interesting question is:
Why are not Japanese and South Koreans demonized as the Nazis and fascists?