Stuart Stevens: Acceptance of Trump’s racism is a ‘haunting truth’ of the current Republican party

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Stuart Stevens, author of “It Was All a Lie: How the Republican Party Became Donald Trump,” discusses how the Republican Party evolved from “compassion and conservatism” to a party that has accepted Donald Trump’s racism. He tells Lawrence O’Donnell, “you don’t have to be a racist to support Donald Trump, but ultimately you have to be comfortable with having a racist as the president.”