Includes bibliographical references (pages 331-392) and index.

Opening statement / Lee C. Bollinger and Geoffrey R. Stone -- Regulating harmful speech on social media : the current legal landscape and policy proposals / Andrew J. Ceresney, Jeffrey P. Cunard, Courtney M. Dankworth, and David A. O'Neil -- Part one. An overview of the problem. Social media and First Amendment fault lines / David A. Strauss ; A deliberate leap in the opposite direction : the need to rethink free speech / Larry Kramer ; The disinformation dilemma / Emily Bazelon ; A framework for regulating falsehoods / Cass R. Sunstein -- Part two. Reforming section 230. The free speech industry / Mary Anne Franks ; The golden era of free speech / Erwin Chemerinsky and Alex Chemerinsky ; Section 230 reforms / Sheldon Whitehouse -- Part three. Content moderation and the problem of algorithms. Algorithms, affordances, and agency / Renée Diresta ; The siren call of content moderation formalism / Evelyn Douek ; Free speech on public platforms / Jamal Greene ; The limits of antidiscrimination law in the digital public sphere / Genevieve Lakier ; Platform power, online speech, and the search for new constitutional categories / Nathaniel Persily -- Strategy and structure : understanding online disinformation and how commitments to "free speech" complicate mitigation approaches / Kate Starbird -- Part four. Other possible reforms. To reform social media, reform informational capitalism / Jack M. Balkin ; Follow the money, back to front / Yochai Benkler ; The First Amendment does not protect replicants / Lawrence Lessig ; Social media, distrust, and regulation : a conversation / Newton N. Minow, Nell Minow, Martha Minow, and Mary Minow ; Profit over people : how to make big tech work for Americans / Amy Klobuchar -- Report of the Commission / Katherine Adams, Jelani Cobb, Martin Baron, Russ Feingold, Lee C. Bollinger, Christina Paxson, Hillary Clinton, and Geoffrey R. Stone -- Concluding statement / Lee C. Bollinger and Geoffrey R. Stone.

"One of the most fiercely debated issues of the current era is what to do about 'bad' speech on the internet, primarily speech on social media platforms such as Facebook and Twitter. 'Bad' speech encompasses a range of problematic communications--hate speech, disinformation and propaganda campaigns, encouragement of and incitement to violence, limited exposure to ideas one disagrees with or that compete with preexisting beliefs, and so on. ... [T]he premise of the current debate is that the ubiquity and structure of this newest and most powerful communications technology magnifies these harms exponentially beyond anything we have encountered before. Some argue that, if it is left unchecked, the very existence of democracy is at risk."--Page xv.