Them!

Walter Russell Mead observes correctly:

Conspiracy theories give true believers the illusion of power by offering a “secret” and, to believers, a convincing account of how the world works; but they simultaneously disempower the believers because they buy into a narrative in which the Powers are so smart, so well-organized and so far-sighted that nothing short of an apocalyptic meltdown will ever bring them down. Belief in conspiracy theories is less a sign of organizing for social change than it is a psychological mechanism that helps people come to grips with their lack of control over the forces shaping their lives.

You'll have to follow the link to discover exactly who believes exactly which clever conspiracy is being used to promote world domination.

But here's a hint.