The mass media today play a vital role in American politics and possess a vast amount of power with reference to the political process. A role is defined as characteristic and expected social behaviour and the function, position or actions taken by a required person or group. (web reference 1) Politics as we know it is inconceivable without the mass media. They are the central forums of political communication in modern liberal democracies and are known today as the 'fourth estate'. This essay will argue the role the mass media play in American politics by examining ideas of political propaganda; dominant ideologies presented in the media, polysemic meanings conveyed, political party campaigns, journalistic bias and their positions as gatekeepers. The mass media of the United States of America are effective and powerful ideological institutions that carry out a system-supportive propaganda function.…