By choice and by circumstance, Ibram X. Kendi has devoted his life to this thing we call race. As a black man, he says he's both experienced and perpetrated racism throughout his life. As an author and historian, he's come up with a case to overcome it. This week, Piya speaks with Kendi about "How to Be an Antiracist", his rallying cry for all of us to reframe how we think about racism in order to remedy it. If we don't, Kendi says racism may well threaten our very existence.