It'd take a legion of liars to pull that big a bluff.
A most instructive passage in this respect is i Kings xxii., where we find some four hundred prophets gathered together round the king, and where it is clear that Jehoshaphat was equally convinced, on the one hand, that the word of Yahweh could be found among the prophets, and on the other that it was very probable that some, or even the mass of them, might be no better than liars.
Politicians are either known to be sexually promiscuous and inveterate liars, or we usually suspect them to be.
Comrade Challis was happy with simply calling people liars whenever he felt like it.
If there is to be a " noble lie ", it is also to involve the willful self-deception of the liars.