'Dark Money' and the Koch Brothers' Political Machine

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The billionaire Koch Brothers aren't just advancing their own interests, they're trying to change the way Americans think. So says investigative journalist Jane Mayer. She's been writing about the Koch Brothers in the New Yorker magazine for five years. Now, she's published a book about them and other American families made powerful by inherited wealth. It's called Dark Money: The Hidden History of the Billionaires behind the Rise of the Radical Right.