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Facebook CEO Mark Zuckerberg Testifies At House Hearing

WASHINGTON, DC – APRIL 11: Facebook co-founder, Chairman and CEO Mark Zuckerberg testifies before the House Energy and Commerce Committee in the Rayburn House Office Building on Capitol Hill April 11, 2018 in Washington, DC. This is the second day of testimony before Congress by Zuckerberg, 33, after it was reported that 87 million Facebook users had their personal information harvested by Cambridge Analytica, a British political consulting firm linked to the Trump campaign. (Photo by Chip Somodevilla/Getty Images)

Mark Zuckerberg
WASHINGTON, DC – SEPTEMBER 5: Twitter chief executive officer Jack Dorsey testifies during a House Committee on Energy and Commerce hearing about Twitter’s transparency and accountability, on Capitol Hill, September 5, 2018 in Washington, DC. Earlier in the day, Dorsey faced questions from the Senate Intelligence Committee about how foreign operatives use their platforms in attempts to influence and manipulate public opinion. (Photo by Drew Angerer/Getty Images)