QUESTION: ... You outlined a model -- filters that propaganda is sent through, on its way to the public. Can you briefly outline those?
CHOMSKY: It's basically an institutional analysis of the major media, what we call a propaganda model. We're talking primarily about the national media, those media that sort of set a general agenda that others more or less adhere to, to the extent that they even pay much attention to national or international affairs.
Now the elite media are sort of the agenda-setting media. That means The New York Times, The Washington Post, the major television channels, and so on. They set the general framework. Local media more or less adapt to their structure.
And they do this in all sorts of ways: by selection of topics, by distribution of concerns, by emphasis and framing of issues, by filtering of information, by bounding of debate within certain limits. They determine, they select, they shape, they control, they restrict -- in order to serve the interests of dominant, elite groups in the society.
http://www.chomsky.info/interviews/1992----02.htm