The Big DM | Interview of the Week: Don Lemon hosts "CNN Tonight with Don Lemon, " and "Silence is Not an Option" podcast, and author of the new book, "This is the Fire: What I Say To My Friends About Racism"

My next guest is Don Lemon. He is the host of a top-rated podcast entitled, "Silence is not an option." The podcast Silence is not an Option embarks on tough...