The Thirteenth Edition includes substantial material involving new media, as technological changes affect traditional patterns of both communication and governance. Key principles remain but are under stress as both media and interpersonal communication systems evolve. At the same time, this textbook continues to draw on the history of mass communication, reviewing both historical and constitutional foundations for freedom of expression. Reputation and privacy are dealt with in greater detail, as the Internet and social media erode the traditional boundaries separating personal from public information. Because media are intertwined with democracy, the book discusses citizens' rights of access to government information and processes.