What are called opinions “on the left” and “on the right” in the media represent only a limited spectrum of debate, which reflects the range of needs of private power—but there’s essentially nothing beyond those “acceptable” positions. So what the media do, in effect, is to take the set of assumptions which express the basic ideas of the propaganda system, whether about the Cold War or the economic system or the “national interest” and so on, and then present a range of debate within that framework—so the debate only enhances the strength of the assumptions, ingraining them in people’s minds as the entire possible spectrum of opinion that there is.