people's choice -> government -> media -> narrative -> people's choice
In this toy model, Roger Ailes and Rupert Murdoch have zero influence over either the media or government?
And certain subsets of these various nodes have a greater outsized influence than their peers. For example, the intelligentsia within the people are usually far more impactful than say Joe Blow from Appalachia.
Let's say that I suspect that democracy is a system that assumes public opinion to be directed so that it doesn't stray too much from a narrow range of possibilities. This can be done just by manipulating the Overton window.