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.<br /><br />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."<br /><br />It also says that companies such as Amazon, Google and Facebook must be broken up to promote fair competition in the marketplace.<br /><br />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.<br /><br />To promote this campaign policy, Warren released the ads onto Facebook and elsewhere.<br /><br />Facebook initially took down the ads saying that it "goes against Facebook's advertising policies."<br /><br />Politico quotes a spokesperson from Facebook saying that the company has since restored the ads "in the interest of allowing robust debate."<br /><br />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."