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Mark Zuckerberg

Facebook CEO Mark Zuckerberg speaks at Georgetown University in Washington.

AP/PTI

An activist wearing a Facebook CEO Mark Zuckerberg mask stands outside Portcullis House in Westminster as an international committee of parliamentarians met for a hearing on the impact of disinformation on democracy in London. Lawmakers from nine countries grilled a Facebook executive who came in place of Zuckerberg as part of an international hearing at Britain's parliament on disinformation and "fake news."

AP Photo/Frank Augstein

Caricature by Manjul

Facebook's CEO Mark Zuckerberg, right, shakes hands to IBM's President and CEO Virginia Rometty during a family picture with guests who attend the "Tech for Good" Summit at the Elysee Palace in Paris.

AP/ PTI

Facebook's CEO Mark Zuckerberg, arrives to meet France's President Emmanuel Macron after the "Tech for Good" Summit at the Elysee Palace in Paris.

AP Photo/Francois Mori

Facebook's CEO Mark Zuckerberg, right meets with French President Emmanuel Macron at the Elysee Palace after the "Tech for Good" summit, in Paris. French President Emmanuel Macron seeks to persuade Facebook CEO Mark Zuckerberg and other internet giants to discuss tax and data protection issues at a Paris meeting set to focus on how they could use their global influence for the public good.

AP/PTI Photo

European Parliament President Antonio Tajani, right, welcomes Facebook CEO Mark Zuckerberg upon his arrival at the EU Parliament in Brussels. Facebook CEO Mark Zuckerberg faces senior European Union lawmakers to answer questions about a scandal over the alleged misuse of the data of millions of Facebook users.

AP/ PTI

Army of fake Zuckerbergs march on EU Parliament ahead of the CEO hearing in Brussels.

AP/PTI

The Facebook founder testifies before a US Senate committee on April 10

Photograph by Getty Images

A cartoon is displayed during questioning by Rep. Michael Burgess, R-Texas, of Facebook CEO Mark Zuckerberg at a House Energy and Commerce hearing on Capitol Hill in Washington about the use of Facebook data to target American voters in the 2016 election and data privacy.

AP Photo/Andrew Harnik

Facebook CEO Mark Zuckerberg takes his seat as he arrives to testify before a joint hearing of the Commerce and Judiciary Committees on Capitol Hill in Washington, about the use of Facebook data to target American voters in the 2016 election.

AP Photo/Carolyn Kaster

Facebook CEO Mark Zuckerberg arrives to testify before a joint hearing of the Commerce and Judiciary Committees on Capitol Hill in Washington, about the use of Facebook data to target American voters in the 2016 election.

AP Photo/Andrew Harnik

Facebook CEO Mark Zuckerberg sits as he arrives to testify before a joint hearing of the Commerce and Judiciary Committees on Capitol Hill in Washington about the use of Facebook data to target American voters in the 2016 election.

AP Photo/Pablo Martinez Monsivais

Life-sized cutouts depicting Facebook CEO Mark Zuckerberg wearing "Fix Fakebook" T-shirts are displayed by advocacy group, Avaaz, on the South East Lawn of the Capitol on Capitol Hill in Washington, ahead of Zuckerberg's appearance before a Senate Judiciary and Commerce Committees joint hearing.

AP Photo/Carolyn Kaster

Facebook CEO Mark Zuckerberg arrives for a meeting with Sen. John Thune, S.D. on Capitol Hill in Washington.

AP/PTI Photo

Facebook CEO Mark Zuckerberg arrives on Capitol Hill in Washington to meet with Sen. Dianne Feinstein, D-Calif., the ranking member of the Senate Judiciary Committee. Zuckerberg will testify before a joint hearing of the Commerce and Judiciary Committees about the use of Facebook data to target American voters in the 2016 election.

AP/PTI Photo

Facebook CEO Mark Zuckerberg takes a selfie with a group of entrepreneurs and innovators after taking part in a roundtable discussion at Cortex Innovation Community technology hub, in St. Louis. Zuckerberg was in St. Louis to announce a program to boost small businesses and bolster individual technical skills both on and off Facebook.

AP Photo/Jeff Roberson

Facebook CEO Mark Zuckerberg speaks in preparation for the Facebook Communities Summit, in Chicago, in advance of an announcement of a new Facebook initiative designed to spur people to form more meaningful communities with Facebook's groups feature.

AP Photo/Nam Y. Huh

Facebook CEO Mark Zuckerberg speaks at his company's annual F8 developer conference, in San Jose, California.

AP Photo/Noah Berger