The other guests were Ethan Zuckerman, director of the MIT Center for Civic Media, and Deray McKesson, who has emerged as a media spokesperson for the Black Lives Matter movement. The topic was digital activism. From the show notes:
As internet natives, brought up in the digital age, today’s young activists are increasingly turning to online platforms to organize and communicate. From Occupy Wall Street to Black Lives Matter to the ALS ice bucket challenge, social movements have begun to enlist the mobilizing force of social media.
An audio file of the show is now available with the show notes, though it sadly seems not to be embeddable 🙁