Mass surveillance by the security services in both the USA and UK took a long time to revealed to the public. I'd count that as a 'large-scale conspiracy'.
This is one of the real-world examples (along with the Tuskegee syphilis experiments and an FBI forensics flap) that was used to train the model.
Still waiting for a satisfying explanation of the discrepancies between the Warren commission report and the laws of physics that doesn't involve a "large-scale conspiracy".
This premise has always been the first thought in my mind when hearing of a conspiracy. Cool to see it modeled in historical context.
yes all of them get revealed, it just that they are not accepted. For example there are pictures of the set of the fake moon landings, still a lot of people believe in the moon landings.
Were the photos of the Apollo landing sites taken from the Lunar Reconnaissance Orbiter faked, too?