The democratization of the media -- really its fragmentation -- has encouraged ideological polarization. Princeton University professor Paul Starr traced this process recently in the Columbia Journalism Review. After the captive audience for network news was released by cable, many Americans did not turn to other sources of news. They turned to entertainment. The viewers who remained were more political and more partisan. "As Walter Cronkite prospered in the old environment," says Starr, "Bill O'Reilly and Keith Olbermann thrive in the new one. As the diminished public for journalism becomes more partisan, journalism itself is likely to shift further in that direction."
Michael Gerson (op-ed for the WP)
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