The World Values Survey delivers more suprising data: if you're looking for people tolerant of marrying outside their ethnicity and religion, look to Russia. Apparently that supposedly rising Russian nationalism doesn't actually affect how Russians want to run their private lives. Other former Soviet republics are also high on tolerance. It seems like the press exaggerates their populations' resentment against the Russians who used to rule them.

We have data mainly for European countries, and some of it does show what one would expect - for example, the Greeks, Turks and Northern Irish like to stick with their own, and religion is a big deal in Poland. However, by far the most intolerant country for which we have data is Malta. I admit I don't know much about Malta so I don't know what could be behind this, but I guess all those white nationalists should get to work on some plans to help the Maltese take over the world so they can institute a global Aryan eugenics program for Roman Catholics. Or whatever.