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The Origins of Our Discontents is a nonfiction book by the American journalist Isabel Wilkerson that was initially published in August 2020
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The book describes racism in the United States as an aspect of a caste system
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a society-wide system of social stratification characterized by notions such as hierarchy, inclusion and exclusion, and purity
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Wilkerson does so by comparing aspects of the experience of American people of color to the caste systems of India and Nazi Germany, and she explores the impact of caste on societies shaped by them, and their people. 
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In Caste, Wilkerson identifies eight  pillars of caste, or features of caste systems in various societies first pillar is  Divine will: the belief that social stratification is beyond human control, either divinely ordained or a natural law, as in the Biblical story of the curse of Ham that was used to justify Black inferiority in the U.S.