You could listen to it (my friend M. did), read the transcript (I did), or watch the documentary that the discussion touches on. It’s really, really good.
https://www.npr.org/2018/08/02/634890750/in-the-wake-of-charlottesville-journalist-begins-documenting-hate-in-america
https://www.npr.org/2018/08/02/634890750/in-the-wake-of-charlottesville-journalist-begins-documenting-hate-in-america