Sen. Elizabeth Warren is calling for the breakup of tech giants such as Amazon, Google and Facebook. "You can be an umpire or you can own a team, but you can't do both at the same time," the Democratic presidential candidate tells CNN.

Sen. Elizabeth Warren is calling for the breakup of tech giants such as Amazon, Google and Facebook. "You can be an umpire or you can own a team, but you can't do both at the same time," the Democratic presidential candidate tells CNN. https://t.co/POqhfPQP97 pic.twitter.com/NHn0kgnbR2

— CNN Business (@CNNBusiness) March 8, 2019