Mediapolis - Journal of Communication, Journalism and Public Sphere is the scientific publication of the Group of Investigation in Communication, Journalism and Public Sphere, from the Centre of Interdisciplinary Studies in the 20Th Century, and it intends to be a reference in the Lusophone and Latin-American world, publishing articles and researches, related to the Media of Journalism, giving a particular emphasis to the aspects related with its influence in the public sphere, political systems and in democracy.