CNN chief international anchor Christiane Amanpour recently spoke with Vox founder and editor-at-large Ezra Klein, where she asked him to explain how America became so politically polarized. Yes, really:

He had to write a whole book about it? Was it just page after page of photos of himself? Because we don’t need a book to tell us that hack journalists like Ezra Klein are a huge reason for the polarization.

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