There was a time when I regarded the idea of an ‘Establishment cover-up’ with a pinch of salt. Was it really plausible that the powers-that-be should act in concert over a prolonged period of time to suppress the truth?
Even if they attempted to do so, surely some decent person would sooner or later speak out, or inform the Press. It seemed unlikely that evil on a vast scale could be concealed more or less indefinitely in what is supposed to be a free and open society.