Concerns about censorship have once again reached a fever pitch across the liberal West. With a few notable exceptions, complaints about censorship in the twenty-first century West are complaints about the behavior of private parties: employers, media conglomerates, social media platforms, and search engines.

To better understand the concerns surrounding nonstate interference with speech, Private Censorship offers an account of censorship, as well as an assessment of the ethical and political issues it raises across contexts. J. P. Messina asks and variously answers questions like: what should we think when employees get fired for things they say and how might patterns of such firings create a climate of fear inimical to free inquiry? When is it appropriate for social media firms to deplatform users, and what does it mean for our democracy that those in charge of such decisions are often wealthy Silicon Valley executives? Do search engines act as massive gatekeepers to information in troubling ways, and how might they be constrained, if they do? Along the way, Messina casts a critical eye on many popular proposals for responding to these complaints. Unlike these popular approaches, Private Censorship foregrounds the importance of rights to property, association, and free expression for thinking well about twenty-first century censorship concerns.