In this essay we define mass media and analyze the impact they have in society and their views. In order to do this we have analyzed the work of the following authors: Lorimer, Parenti Chomsky and Kilborne. Parenti sets the discussion by accusing the media of not being impartial and under control of the rich and powerful. Lorimer agrees to this but also introduces the concept of globalization of the media and loss of cultural identity. Chomsky introduces hid "propaganda theory" and the work of Kilborne analyses the influence of the advertising companies in the media.