Frances Haugen, a former Facebook employee and whistleblower, testifies before a Senate Committee on Commerce, Science, and Transportation hearing in Washington, Oct. 5, 2021. To counter Haugen’s claims executives at Facebook have conducted live internal events with employees, held emergency briefing sessions and sent numerous memos, according to some of the memos obtained by The New York Times and interviews with about a dozen current and former employees. (T.J. Kirkpatrick/The New York Times)
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