Facebook announced that it won’t fact check political advertising. Facing a chorus of criticism, Mark Zuckerberg defended his policy last week saying that “in a democracy, I don’t think it’s right for private companies to censor politicians, or the news.” In contrast, Twitter recently announced that it would ban all political advertising on its platform.  This hour, should social media companies moderate political content? What role do these platforms play in our democracy? And how do users choose, process, and spread information and misinformation online? Our guests are BRENDAN NYHAN, professor of government at Dartmouth, and ELLEN GOODMAN, professor of law at Rutgers University Law School.