NSA whistleblower Edward Snowden and Pulitzer Prize-winning journalists Glenn Greenwald and Chris Hedges discuss mass surveillance, government secrecy, Internet freedom and U.S. attempts to extradite and prosecute Wikileaks founder Julian Assange. They spoke together on a panel moderated by Amy Goodman at the virtual War on Terror film festival after a screening of “Citizenfour” — the Oscar-winning documentary about Snowden by Laura Poitras.