RE: The "who is white and who isn't" discussion - there's a divide between Americans and Europeans. In Europe, the dividing lines are drawn around whether you're of European heritage, not really whether you're 'white' or not - that's more of an American thing. So to many Europeans, this distinction between who and who isn't white doesn't really make much sense, because it's a very arbitrary line to draw ultimately. Why is a French person from the South of France white but not a Spanish person? Why are Austrian people white but not Italians? They're practically right next to each other.
It's maybe easier to draw these lines in America, but not so much in Europe, where these populations actually come from.
(FWIW, 'white' is obviously used in Europe and in many ways similar to as it is in America, but there are some differences and I think that's where some confusion comes from in discussions on this between Americans and Europeans sometimes).