I'm not talking about ads, I mean actual content. There are countless examples, I'm sure. The idea of paying the media to push/ promote an agenda is certainly nothing new. Why do you doubt it?
Here are some examples, a google search on "news media paid for agenda".
Foundations plan to pay news media to cover radical UN agenda The United Nations Foundation created by billionaire Ted Turner, along with a branch of media giant Thomson Reuters, is starting to train a squadron of journalists and subsidize media content in 33 countries—including the U.S. and Britain--in a planned $6 million effort to popularize the bulky and sweeping U.N.-sponsored Sustainable Development Goals, prior to a global U.N. summit this September, where U.N. organizers hope they will be endorsed by world leaders.
The subsidy approach, U.N. Foundation's Sherinian said, was “not dissimilar” to the funding that the Bill and Melinda Gates Foundation has provided for sveral years to the left-wing British newspaper The Guardian, to publish what amounts to sponsored news about economic development issues, including the Foundation's campaign to extirpate AIDS, tuberculosis and malaria.
Pundit paid to push administration agenda Government watchdogs, media groups and lawmakers are raising new questions about White House efforts to shape news coverage after revelations Friday that the administration paid syndicated pundit Armstrong Williams $240,000 to promote the No Child Left Behind Act.
The story comes on the heels of an internal government report blasting the Office of National Drug Control Policy for distributing commercials that were broadcast as news reports. The Department of Education also paid a public relations firm to produce commercials last year that were aired by stations across the country as news items.
Agenda-setting theory Agenda-setting theory describes the "ability [of the news media] to influence the salience of topics on the public agenda." With agenda setting being a social science theory, it also attempts to make predictions. That is, if a news item is covered frequently and prominently, the audience will regard the issue as more important. Agenda-setting theory was formally developed by Max McCombs and Donald Shaw in a study on the 1968 American presidential election. In the 1968 "Chapel Hill study", McCombs and Shaw demonstrated a strong correlation coefficient (r > .9) between what 100 residents of Chapel Hill, North Carolina thought was the most important election issue and what the local and national news media reported was the most important issue.
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Public Opinion, the Press, and Public Policy