Well, assuming there's no lying involved, the NSA never tracked us, Iraq had WMDs, and Bill Clinton did not have sex with that woman.
There's a broader epistemological problem afoot here: the NSA could easily design a flawed zero-knowledge proof mechanism that I would never see a flaw in. Likewise, it's always going to be easier to fake a video of magitek than it will be to invent it for real. As a result it's essentially impossible to believe these stories under any circumstances short of an actual leak of the magitek.