For most Americans, protecting free expression means countering threats from government. Private corporations are not usually seen as threatening free speech. But as private technology companies increasingly mediate access to information and services, the distinction between governmental and private censorship becomes less clear. Concepts of free speech and freedom of expression may need to be revised and enlarged to take account of new threats in the age of digital communications—and policies to protect freedom of expression may need to counter threats, often subtle, from the private sector as well as government. more...