This document discusses different theories of media, including the Authoritarian Theory, Libertarian Theory, Soviet Theory, and Social Responsibility Theory. It then focuses on explaining the Pluralist-Liberal View of media and its key assumptions. The Pluralist-Liberal View assumes a diversity of interests balances society, groups have roughly equal power, and the government acts as an impartial referee. It also assumes media help give voice to all views, inform citizens, and independently watch over government. The document discusses criticisms of the Pluralist view and roles of media like the Fourth Estate. It concludes with resume points about societal competing interests, independent and diverse media production and content, and professional and audience autonomy.