We have long argued that the “naturalness” of these processes, with inconvenient facts allowed sparingly and within the proper framework of assumptions, and fundamental dissent virtually excluded from the mass media (but permitted in a marginalized press), makes for a propaganda system that is far more credible and effective in putting over a patriotic agenda than one with official censorship.

— Manufacturing Consent by Edward S. Herman, Noam Chomsky, Edward S. Herman, and 1 other