Facebook fuels division, harms children: Whistleblower

The testimony in US Congress by ex-employee Frances Haugen has fueled one of Facebook's most serious crises yet, and prompted a denial from CEO Mark Zuckerberg, who said in a post on his account that her claim the company prioritizes profit over safety was "just not true." Haugen testified on Capitol Hill after she leaked reams of internal research to authorities and The Wall Street Journal.