Oh, absolutely, there's a hell of a lot of history out there, which is why I don't think it's possible to know what the map of racism is in another culture without at least a serious amount of study, or preferably living there. I have no idea to what extent having Moorish ancestors is seen in Spain as being less Spanish - if at all.

I know that the Greeks and the Turks are bitter enemies, but that seems to be despite the fact that most Greeks will have some Turkish blood. Why - given that's the case - we in Britain would define Greeks as white and Turks as not-white, I don't know. But I don't suppose any racial classification system is exactly based on reason. Which is, again, why the local nuances are so hard to guess when you're looking at them from a different culture.