Growing Ad Boycotts Are Pressuring Facebook to Stop Misinformation and Hate Speech 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 Oct. 23, 2019, file photo shows Facebook CEO Mark Zuckerberg testifying before a House Financial Services Committee hearing on Capitol Hill in Washington. ( AP Photo/Andrew Harnik, File ) Produced by GBH, PRX and WNYC Studios