1 I counted four factual mistakes in your short piece. First, not 'identity cards' but internal passports. Second, under USSR citizens were not required to carry internal passports. Third, there was no such clause like 'race' in these documents. Concerning racial problems - not all muslims terrorist, but all terrorists are muslim. There is nothing strange in 'profiling' you described if you consider that Russia is still in the state of civil war in Northern Caucasia.

2 Why is it that racism only exists in "white" countries, but not the rest of the world? A non-white person can go into any white-majority country without fear of violence, but the same can't be said about the obverse; white people who travel to "brown" countries are only about a million times more likely to be raped, robbed, or murdered than a brown person in a white country.
Why is this? Is it because of skin color? Colonialism? Imperialism? No, it's a little thing we call civilization, which exists almost solely in the Western hemisphere and East Asia, to varying degrees from place to place. According to the liberals' unwritten manifesto, Africa should be the safest place on the planet, because there are very few white people there, and those are mostly powerless now, but the facts prove otherwise. For example, no aboriginal sub-Saharan African group has ever produced a civilization in the Western sense, though many did manage to build fairly prosperous cultures, such as the Zulu, who built a society strikingly similar to what the Spartans had over two millenia ago, but that was a socialist military culture, and not real civilization in the Athenian sense.
Now I'm not picking on Africans in particular, because there are even parts of Europe where civilized notions never really took hold, at least not without soldiers from civilized cultures enforcing good behavior at gunpoint; my point is that some people adapt to the customs of civilization better than others, regardless of the reason, and it's nothing but hypocritical to only point out the shortcomings of light-skinned people while totally disregarding the behavior of all others.