Here is a great article by Mother Jones, though I do believe it understates the plain fact that the corporate media is also more willing to openly pander to its corporate sponsors today, rather than engage in any real journalism that exposes the influence and control of such sponsors. For example, does a media outlet that is funded in part by advertising from oil companies fairly cover stories regarding subsidies to oil companies. Perhaps it does, but in the interest of fairness and balance, it gives Republicans a free pass to spout lies in defense of those oil companies.
http://motherjones.com/politics/2011/04/history-political-lying
IT TAKES TWO THINGS to make a political lie work: a powerful person or institution willing to utter it, and another set of powerful institutions to amplify it. The former has always been with us: Kings, corporate executives, politicians, and ideologues from both sides of the aisle have been entirely willing to bend the truth when they felt it necessary or convenient. So why does it seem as if we're living in a time of overwhelmingly brazen deception? What's changed?
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There evolved a new media definition of civility that privileged "balance" over truth-telling—even when one side was lying. It's a real and profound change—one stunningly obvious when you review a 1973 PBS news panel hosted by Bill Moyers and featuring National Review editor George Will, both excoriating the administration's "Watergate morality." Such a panel today on, say, global warming would not be complete without a complement of conservatives, one of them probably George Will, lambasting the "liberal" contention that scientific facts are facts—and anyone daring to call them out for lying would be instantly censured. It's happened to me more than once—on public radio, no less.
In the same vein, when the Obama administration accused Fox News of not being a legitimate news source, the DC journalism elite rushed to admonish the White House. Granted, they were partly defending Major Garrett, the network's since-departed White House correspondent and a solid journalist—but in the process, few acknowledged that under Roger Ailes, another Nixon veteran, management has enforced an ideological line top to bottom.
The protective bubble of the "civility" mandate also seems to extend to the propagandists whose absurdly doctored stories and videos continue to fool the mainstream media. From blogger Pamela Geller, originator of the "Ground Zero mosque" falsehood, to Andrew Breitbart's video attack on Shirley Sherrod—who lost her job after her anti-discrimination speech was deceptively edited to make her sound like a racist—to James O'Keefe's fraudulent sting against National Public Radio, right-wing ideologues "lie without consequence," as a desperate Vincent Foster put it in his suicide note nearly two decades ago. But they only succeed because they are amplified by "balanced" outlets that frame each smear as just another he-said-she-said "controversy."