"But Zuckerbergs denial that the platform presents highly partisan stories in a right-wing media echo chamber is simply false. New York Times technology columnist Kevin Roose has been documenting Facebooks best-performing content. Day after day, the results tell a tough truth: Facebook is overflowing with right-wing content."
"Since 2016, Facebook has taken an increasingly conservative bent, with much of the internal activism reportedly the result of Kaplan and Katie Harbath, Facebooks public policy director for global elections and former chief digital strategist for the Republican National Committee. In January, Facebook hired former Fox & Friends senior producer Jennifer Williams to head video strategy for Facebook News, joining the companys extensive staff of former figures from right-wing media and Republican politics. In February, The Washington Post published a bombshell report detailing some of their behind-the-scenes conservative advocacy at Facebook."
"Zuckerberg may disagree with the characterization of Facebook as a right-wing echo chamber, but that doesnt make it any less true. Conservatives are thriving on Facebook, and theyre able to do this thanks to inconsistently applied policy enforcement, internal ideological advocacy, and general right-wing favoritism."
https://www.mediamatters.org/facebook/mark-zuckerberg-denies-facebook-right-wing-echo-chamber-facts-tell-different-story