Precisely because freedom of expression varies across countries and cultures and across media types, freedom of expression is discussed across a spectrum of geopolitical and technological contexts. Robert Trager and Donna L. Dickerson investigate the tensions between censorship and expression, to reveal how complex, culturally charged, and historically deep these tensions can be. Discussions are typically framed around social issues and set in contexts that allow readers to see connections between expression and commerce, politics, economics, class, race, and gender. The new frontier of digital communications, especially the Internet, is revealed as the latest battleground for law and social policy.