For most of humankind, and for tens of thousands of years, the idea that humanity includes every individual on the face of the earth has not existed. This designation stops at the border of a tribe or linguistic group, sometimes even at the edge of a village.
— Paraphrased from Claude Lévi-Strauss, Race and History, 1952 (full quote and context)
I guess my beloved Star Trek future—post-scarcity, post-conflict, beyond divisions—is still far away.