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CAMBRIDGE, MA - MAY 25: Facebook Founder and CEO Mark Zuckerberg delivers the commencement address at the Alumni Exercises at Harvard's 366th commencement exercises on May 25, 2017 in Cambridge, Massachusetts. Zuckerberg studied computer science at Harvard before leaving to move Facebook to Paolo Alto, CA. He returned to the campus this week to his former dorm room and live streamed his visit. (Photo by Paul Marotta/Getty Images)

CAMBRIDGE, MA - MAY 25:  Facebook Founder and CEO Mark Zuckerberg delivers the commencement address at the Alumni Exercises at Harvard's 366th commencement exercises on May 25, 2017 in Cambridge, Massachusetts. Zuckerberg studied computer science at Harvard before leaving to move Facebook to Paolo Alto, CA. He returned to the campus this week to his former dorm room and live streamed his visit.  (Photo by Paul Marotta/Getty Images)

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PALO ALTO, CA - JULY 06: Facebook CEO Mark Zuckerberg prepares to speak at a news conference at Facebook headquarters July 6, 2011 in Palo Alto, California. Zuckerberg announced new features that are coming to Facebook including video chat and a group chat feature. (Photo by Justin Sullivan/Getty Images)

PALO ALTO, CA - JULY 06:  Facebook CEO Mark Zuckerberg prepares to speak at a news conference at Facebook headquarters July 6, 2011 in Palo Alto, California.  Zuckerberg announced new features that are coming to Facebook including video chat and a group chat feature.  (Photo by Justin Sullivan/Getty Images)

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SAN FRANCISCO, CA - SEPTEMBER 22: Facebook CEO Mark Zuckerberg pauses as he delivers a keynote address during the Facebook f8 conference on September 22, 2011 in San Francisco, California. Facebook CEO Mark Zuckerberg kicked off the conference introducing a Timeline feature to the popular social network. (Photo by Justin Sullivan/Getty Images)

SAN FRANCISCO, CA - SEPTEMBER 22:  Facebook CEO Mark Zuckerberg pauses as he delivers a keynote address during the Facebook f8 conference on September 22, 2011 in San Francisco, California. Facebook CEO Mark Zuckerberg kicked off the conference introducing a Timeline feature to the popular social network.  (Photo by Justin Sullivan/Getty Images)

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BERLIN, GERMANY - FEBRUARY 25: Mark Zuckerberg (R) and Priscilla Chan arrive for the presentation of the first Axel Springer Award on February 25, 2016 in Berlin, Germany. (Photo by Adam Berry/Getty Images)

BERLIN, GERMANY - FEBRUARY 25:  Mark Zuckerberg (R) and Priscilla Chan arrive for the presentation of the first Axel Springer Award on February 25, 2016 in Berlin, Germany.  (Photo by Adam Berry/Getty Images)

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SAN FRANCISCO, CA - SEPTEMBER 11: Facebook founder and CEO Mark Zuckerberg speaks during the 2013 TechCrunch Disrupt conference on September 11, 2013 in San Francisco, California. The TechCruch Disrupt Conference runs through September 11. (Photo by Justin Sullivan/Getty Images)

SAN FRANCISCO, CA - SEPTEMBER 11:  Facebook founder and CEO Mark Zuckerberg speaks during the 2013 TechCrunch Disrupt conference on September 11, 2013 in San Francisco, California. The TechCruch Disrupt Conference runs through September 11.  (Photo by Justin Sullivan/Getty Images)