According to Kruse and Zelizer, what role did Race and the “Crises” of the 1960s

According to Kruse and Zelizer, what role did Race and the “Crises” of the 1960s and 1970s contribute to the Reagan Revolution of 1980?
Use the attached document, specifically pages 88-134, 160-202. It is the only source you need. Use Chicago citations.

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