In her new book, “Dark Money: The Hidden History of the Billionaires Behind the Rise of the Radical Right,” New Yorker reporter Jane Mayer explores how the Koch brothers and fellow right-wing billionaires have funded a political machine aimed at shaping elections and public policy. The book contains a number of revelations and new details. Mayer begins with revealing that the Kochs’ father, industrialist Fred Koch, helped build an oil refinery in Nazi Germany—a project approved personally by Adolf Hitler. The refinery was critical to the Nazi war effort, fueling German warplanes. Mayer joins us to discuss. 

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