Facebook CEO Mark Zuckerberg in Washington this week arguing for Libra, the digital currency his company created and wants to build around. This after he last week made the case in front of an audience at Georgetown University that Facebook’s future, its past, its reason for being are all tied up in free speech. With me this week for another bite out of this Facebook and free speech debate: John Stanton, the cofounder of the Save Journalism Project, and Farhad Manjoo, columnist for the New York Times.