MENLO PARK, CALIFORNIA — Facebook had removed ads placed by Warren's presidential campaign which called for tech companies, such as Facebook, to be broken up before the ads were restored, Politico reports.

Warren and her team released an article on Medium last week, which says that tech giants have too much power these days and have "bulldozed competition."

It also says that companies such as Amazon, Google and Facebook must be broken up to promote fair competition in the marketplace.

Warren also pointed out that these companies have made money out of selling private information and have hurt small businesses and "stifled innovation" in the process.

To promote this campaign policy, Warren released the ads onto Facebook and elsewhere.

Facebook initially took down the ads saying that it "goes against Facebook's advertising policies."

Politico quotes a spokesperson from Facebook saying that the company has since restored the ads "in the interest of allowing robust debate."

Warren posted a tweet saying: "Curious why I think FB has too much power? Let's start with their ability to shut down a debate over whether FB has too much power."