Book Excerpt: 'The Fox Effect' | National Memo | Breaking News, Smart Politics: "As the first months of Obama’s presidency progressed, the differences in coverage between Fox News and other networks continued to emerge. Fox became a breeding ground for Republican talking points. This link grew so tight that Fox began airing Republican press releases verbatim, presenting them as original reporting with no citation."
'via Blog this'
You can answer the question in the headline by substituting the name of any propagandist of note, but I was thinking particularly of the sort of development that took place in Germany during the 1930s, tilling the ground for a harvest of lies.
Charles Sanders Peirce - Thinking in Threes