Oh, the Roswell cover-up. Cause there really was a Roswell cover-up, only it was about the (then) high tech surveillance program to see if the Soviets had The Bomb. 2 years later the Soviets did and they told everyone anyway.
A bit meta, but "apparently" the KGB would egg conspiracy theorists on, in the hopes they'd discredit the US government. Which is exactly the sort of thing the KGB had the resources and inclination to do, so dunno if it counts.
And then there the "evil conspiracy" to have the US, Canada and Mexico adopt the same currency, the Amero or somesuch, like the Euro. I bet the conspirators that work with the space lizards make fun of those people.
A bit meta, but "apparently" the KGB would egg conspiracy theorists on, in the hopes they'd discredit the US government. Which is exactly the sort of thing the KGB had the resources and inclination to do, so dunno if it counts.
And then there the "evil conspiracy" to have the US, Canada and Mexico adopt the same currency, the Amero or somesuch, like the Euro. I bet the conspirators that work with the space lizards make fun of those people.