Race and Ethnicity as Social Constructions

Racial categories were invented by specific people at specific times for specific purposes, then embedded in law, medicine, and habit so they feel natural — a fiction in origin, a force in practice.

Race has no natural basis, but collective belief and institutional backing give it enormous real-world power — you can't opt out by being skeptical.

About 85–90% of variation occurs WITHIN any named population group; only a small fraction distinguishes groups from one another.

Traits change gradually across geography, and different traits have different gradients that cut across each other, so any dividing line groups and splits people inconsistently.

Skin pigmentation tracks UV radiation (dark skin evolved independently in South India, equatorial Africa, Melanesia); lactase persistence tracks dairying; sickle-cell trait tracks malaria (West Africa, Greece, Saudi Arabia).

All humans descend from African populations within ~200,000 years, and the deepest genetic divisions on Earth exist AMONG African populations.

No — they reflect local population history plus knowledge of local classification conventions, not discovery of natural types.

Ancient empires had slavery and ethnocentrism but generally ranked people by language and custom, not inherited, body-based permanent types; a barbarian who learned Greek could become civilized.

With European colonial expansion and the Atlantic slave trade (~1450–1800), to explain why some humans could be owned while Enlightenment thinkers proclaimed all men equal — by narrowing 'men.'

A U.S. classification logic found nowhere in nature and almost nowhere else; Brazil uses dozens of shifting color terms (moreno, pardo) where 'money whitens.'