[hackernews1134]

You have yet to explain why genetic extermination (whatever you mean by that) is undesirable.

Naming a natural evolutionary occurrence (and I mean genetic mixing, not colonization) a pejorative doesn’t make it so.

There is plenty of genetic mixing happening in the world in the last single generation without any colonization. Go back in time far enough and you can draw a line from any major event to a calamity that came after it. It’s quite easy to see through your veiled prejudice for inter-racial breeding.