Humanity is everywhere the same. Whatever differences there in terms of customs and culture, language and manners, the inner man is still the same. If we scratch below the surface we discover the same ego-centered, desire-driven nature.
No doubt there are differences of degree and scale; the range and expression change as we move up the human ladder of evolution, but the driving wheels and motive forces still belong to the general ignorance.
Therefore, racism is absurd. It is only the rare few who have gone beyond the human formula and found their soul who stand out as a different grade of humanity together. But these rare ones are marked by a divine humility rather than any racial or other superiority.