COATES: I want to make sure you know a new episode of Don Lemon's podcast, "Silence is Not an Option," is out right now.</s>COATES: And this week, he is speaking with Pulitzer Prize Isabel Wilkerson about how race is only one part of a larger system that determines who is valued and who is dispensable in this country. You can find it on Apple podcast or your favorite podcast app. But here is a sneak peak.</s>DON LEMON, CNN HOST (voice-over): Isabel says that race is a social construct, not biological. It's an arbitrary category.</s>ISABEL WILKERSON, AMERICAN JOURNALIST, FIRST WOMAN OF AFRICAN-AMERICAN HERITAGE TO WIN THE PULITZER PRIZE IN JOURNALISM (voice-over): Color is a fact, but race is a social construct, so these are constructed identities. And so caste is essentially the bones, and race is the skin. Caste is the underlying hierarchy or infrastructure, the framework, and race is the tool that indicates to all of us where one fits in the hierarchy.</s>COATES: Another great episode for you. Thanks for watching. Our coverage continues.
Isabel Wilkerson Explains America's Caste System.