Facebook CEO and founder Mark Zuckerberg speaks during a discussion at the Global Entrepreneurship Summit at Stanford University in Palo Alto, California on June 24, 2016. / AFP / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)

Facebook CEO and founder Mark Zuckerberg speaks during a discussion at the Global Entrepreneurship Summit at Stanford University in Palo Alto, California on June 24, 2016. / AFP / MANDEL NGAN        (Photo credit should read MANDEL NGAN/AFP/Getty Images)