They said the Japanese are strict about keeping Japan Japanese, and that they believe bringing other ethnicities into their society raises crime rates, etc...
They've got laws on the book to make sure their society isn't invaded by "outsiders" (not just Blacks, Whites, and Hispanics, but even other Asians).
The reporter on the show (I think it was Vanguard) acted like this was an ignorant, racist policy. It seems to be working for Japan though?
Discuss...
I wish countries in Europe would adopt this policy.