Skip the labels, our species in it's entire history worldwide regardless has always had a tendency to flock to that which they are familiar to. White people in America do that too, blacks do it we all do it to some degree. I wouldn't worry about why others don't speak your language, or where they come from. What matters is that the individual is non violent and contributing. There are lots of violent white people in America whom don't have their education and I am sure where others come from they have their middle and poor too.
Point is we are NOT a separate species.
Point is we are NOT a separate species.