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Pulitzer Prize-winning journalist and author Isabel Wilkerson explains the premise of her book, \u201cCaste: The Origins of Our Discontents,\u201d and points out that the United States continues to perpetuate a caste system designed by the country\u2019s founders. Check out the book, now available in paperback.\nLearn more about your ad choices. Visit megaphone.fm/adchoices