A Facebook co-founder has expressed his discontent with the path the company has taken, and would like to see the social media giant broken up.

Chris Hughes said in an op-ed in the New York Times that US tech companies are in need of regulations.

Chris Hughes left Facebook a decade ago. Hughes worked on Facebook’s initial phases along with founder and current CEO Mark Zuckerberg in their Harvard dorm. The project seems to have taken quite a turn from his point of view, as Hughes now believes that Zuckerberg is “not accountable” and has called for the government to break the company up. Hughes is joining many other voices who’ve advocated for more privacy, including various advocates and lawmakers. “The Facebook that exists today is not the Facebook that we founded in 2004,” Hughes told NBC News.

For their part, Facebook’s Vice President of Global Affairs & Communications has responded to the op-ed stating that Facebook “accepts that with success comes accountability,” but that “you don’t enforce accountability by calling for the break up of a successful American company.” It would indeed be unprecedented if the government were to take action to destroy or break Facebook. He is in good company in his disagreements, however. Various US politicians from both sides of the political divide share his concerns regarding privacy and accountability. Several politicians including Elizabeth Warren and Ted Cruz have called for federal antitrust action against the social network.

Mark Zuckerberg or his lawyers and executives have showed up to many congressional hearings to make apologies in recent years. On the one hand, Facebook leadership has made several commitments to improving and preventing further damage, but on the other hand, many watchdogs believe that Facebook hasn’t gone far enough.