One of Warren’s ads is a video directing users to a petition on her campaign website, asking voters to support her plan. Others feature images and text with the the same message. In a tweet, the Senator said that the event demonstrates how much power Facebook wields.

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. Thanks for restoring my posts. But I want a social media marketplace that isn’t dominated by a single censor. #BreakUpBigTech https://t.co/UPS6dozOxn

— Elizabeth Warren (@ewarren) March 11, 2019

The company, however, told Politico that it pulled the ads down because they violated its policies against the use of its corporate logo. When it removed three of the Senator’s advertisements — more than a dozen were apparently not affected — it replaced them with a message that said: “This ad was taken down because it goes against Facebook’s advertising policies.” The spokesperson explained that the social network has now restored them “in the interest of allowing robust debate.”