How did American politics degenerate into the two opposing worldviews battling for control today?

Contrary to popular belief, Republican crazies are not a new phenomenon, said writer Rick Perlstein when he dropped by The Nation‘s offices recently. So why does it seem that they have only recently polarized America’s political and social atmosphere? Listen to this week’s episode of Nation Conversations for Perlstein’s explanation of the degeneration of the American political scene.

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—Elizabeth Whitman