Excerpts from Noam Chomsky & Edward Herman's _Manufacturing Consent_

> In effect, the large bureaucracies of the powerful subsidize the mass media, and gain special access by their contribution to reducing the media’s costs of acquiring the raw materials of, and producing, news. The large entities that provide this subsidy become "routine" news sources and have privileged access to the gates. Non-routine sources must struggle for access, and may be ignored by the arbitrary decision of the gatekeepers. It should also be noted that in the case of the largesse of the Pentagon and the State Department’s Office of Public Diplomacy, the subsidy is at the taxpayers’ expense, so that, in effect, the citizenry pays to be propagandized in the interest of powerful groups such as military contractors and other sponsors of state terrorism. 
Perhaps more important, powerful sources regularly take advantage of media routines and dependency to "manage" the media, to manipulate them into following a special agenda and framework (as we will show in detail in the chapters that follow). Part of this management process consists of inundating the media with stories, which serve sometimes to foist a particular line and frame on the media (e.g., Nicaragua as illicitly supplying arms to the Salvadoran rebels), and at other times to help chase unwanted stories off the front page or out of the media altogether (the alleged delivery of MIGs to Nicaragua during the week of the I984 Nicaraguan election). This strategy can be traced back at least as far as the Committee on Public Information, established to coordinate propaganda during World War I, which "discovered in I9I7-I8 that one of the best means of controlling news was flooding news channels with ‘facts,’ or what amounted to official information." 
The relation between power and sourcing extends beyond official and corporate provision of day-to-day news to shaping the supply of "experts." The dominance of official sources is weakened by the existence of highly respectable unofficial sources that give dissident views with great authority. This problem is alleviated by "co-opting the experts"-i.e., putting them on the payroll as consultants, funding their research, and organizing think tanks that will hire them directly and help disseminate their messages. In this way bias may be structured, and the supply of experts may be skewed in the direction desired by the government and "the market."

###### https://chomsky.info/consent01/