More on that: http://www.bbc.co.uk/news/world-europe-19297373
In particular, take a look at the video at the bottom to see the disgraceful way Kasparov was treated. I thought this stuff happens to opposition leaders only in India.
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I still have one question though. What about gypsies? They have some features with which it's not that hard to tell them apart from others, yet, they've been living all over for hundreds of years. They've always lived with another nation, but they didn't seem to "adapt" the appearances of those around them. Or at least to that extent where people can't tell the two groups apart. Can it be because they were always sort of discriminated against and were left to their own? Because they only married to one another (not in family)? Or because they were pretty much always travelling?
@Monkey:
Gypsies are from India originally. And from what I know they're extremely self isolating. Yes, probably because it helped them stay protected from the people around them.
Gypsies share a lot of features with ethnic Kashmiris and Pathans from Afghanistan and Pakistan. The prominent noses, mainly. They look very little like your average Indian.