Whistle-Blowers Accuse Facebook of Censorship, Bias Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Facebook CEO Mark Zuckerberg(C) answers questions during a media event at Facebook's headquarters in Menlo Park, California on March 7, 2013. ( Josh Edelson/AFP / Getty ) Produced by Thalia Beaty Produced by PRI and WNYC