I think the big changes has been the fracturing of “opinion shapers”. Back in the JFK era nobody talked about his affairs - that was an agreement among the media.

Then the disruption of the 60’s happened and the Vietnam War drove a schism between official govt stance and the truth on the ground and some media personalities were famous for exposing it.

Now everything is fractured and when you dig into it you realize both side are trying to shape the narrative, so both are being selective about the truth.

By fighting over whose wool to pull over your eyes they inadvertently pulled it off entirely.