Well, buddy. You missed it by a thousand miles. That's the most clueless one-shot I've ever seen on this forum.
1. What has USSR has to do with Russia/ Russian Empire?
2. What does Dzhugashvili has to do with Russians? What does Soviet ideology has to do with Russian national consciousness? Communists thought that Russian nationalism is the largest threat to their existence and it has to be utterly crushed. That's why Russian language was banned and then reinvented. Not going to talk about reinvented national identities.
3. Why do you speak about eradication of "natives" (they were not natives but citizens of Russia and Soviet Union) and do not mention Russian casualties under communist regime? What were the absolute numbers?
Colonisation numbers: the link you provided suggests that total casualties of Siberian natives were below 100 th. The text itself is murky copy-paste of a biased book which doesn't provide any adequate analysis but is a collection of "stories" so the numbers don't add up.
http://en.wikipedia.org/wiki/Genocide_of_indigenous_peoples#Pre-1948_examples.
The question of colonization and genocide in the Americas: Russell Thornton (1987) arrived at a figure (pre-contact population in Americas in 1492) around 70 million. Depending on the estimate of the initial population, by 1900 the indigenous population can be said to have declined by more than 80% (more than 50 million people), due mostly to the effects of diseases such as smallpox, measles and cholera, but also violence and warfare by colonizers against the Indians.
On a comparative basis the colonization of Siberia was absolutely bloodless.
"In light of the U.N. language, even putting aside some of its looser constructions - it is impossible to know what transpired in the Americas during the sixteenth seventeenth, eighteenth and nineteenth centuries and not conclude that it was genocide".