CAMBRIDGE, Massachusetts, USA -- Wednesday, March 23, 2016 -- The 2016 LibrePlanet free software conference drew nearly 350 activists from around the world to discuss issues of freedom, privacy, and security in computing. NSA whistleblower Edward Snowden and ACLU technologist Daniel Kahn Gillmor discussed "The last lighthouse: free software in dark times" in an opening keynote before a brimming audience at MIT's Stata Center, with hundreds of remote participants tuning in online.