Lewis Lukens, fomer Acting Ambassador to the U.K., joins Christiane Amanpour to discuss the potential costs of a U.K.-U.S. trade deal post-Brexit. Our Hari Sreenivasan sits down with Caleb Cain, who was radicalized by alt-right videos, and Kevin Roose, New York Times tech Columnist. They unpack the ways in which we can embrace and reject extremism both online and in real life. Perri Peltz and Matthew O'Neill, co-directors and co-producers of "Alternate Endings", explain why we need to be more open about talking about death.
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