The question is: Does the news media (which includes Facebook, Twitter, and other social media) have a duty to objective reality? In the old days major news organizations had a public obligation to stick to the truth as much as possible. They had fact checkers, independent editorial boards, and other firewalls against false information.

Without such protections people end up believing convenient lies at a much greater rate, which is destructive to society. We've tried the big experiment with unfettered flow of information and it resulted in people being less informed and more radicalized. Clearly it doesn't work, at least not at scale.