Read any news operated by Rupert Murdoch for a bit, it should give you some ideas. First, though, what seems to be the way it works is via the media - most importantly, by constantly tweaking or twisting the actual events in order to suit the desired narrative. Give greater priority to stories that fit the pattern you want, and lesser priority to stories that don't (for example, when a white kid shoots up a school in the US, it's "a lone disturbed individual", and coverage begins and ends there. When an arabic kid does it, it's months of headlines about terrorism, extremism and islam - regardless of whether that was actually the cause). That way, when offshore-based, tax-evading vulture-capitalist shell companies buy, asset-strip and run your public services into the ground, the media can have everyone blaming the poor Somalian lad who sells aftershave in the cheap nightclub bathroom for it. "Immigrants put so much strain on public services that they fail", after all.
A small group of intellectuals teaches it to their students. Those students go on into teaching also, as well as into media (journalism, entertainment, etc) and government. Those students teach their kids, and the next generation teaches more students, and that idea becomes more and more prevalent (via mass entertainment-with-a-message, editorial/op ed pieces, etc and introduction of the idea into secondary schools) .. after about 4 or 5 generations, you'll have nothing but true believers, because peer pressure to be "politically correct" (ie, true to the idea, whatever it is) will have wiped out all thought of opposing the idea (if you do, you're a bad person, a bigot, a redneck, whatever.) Basically, you have to play a really long game to make it work, because overnight revolutions never, ever last.
Hmm. An interesting topic. It might come in three parts, actually. One part contains the people who actually BELIEVE. There are probably a zillion reasons for people believing in stuff. The other part contains the people who don't believe, but who pretend to believe in order to prosper within their society, or to save their skins. And the third part are people who don't believe, and are honest about it. Institutions like the Spanish Inquisition, the Gestapo, etc, are set up by the power elite to root out the second and third group, and these lackeys can be quite diligent at the task. The one thing that strikes me, though, is that throughout history these situations have existed, but they never exist forever. They do keep cropping up again and again, but like everything else, they pass. Power and coercion only last a while, then they are either overthrown, or they fade. Nothing lasts forever, does it? Unfortunately, that applies to good stuff as well as bad stuff.
An effective manipulative way to do it would be to find something that the people view as an issue that no one is listening to their concerns that surround it. The manipulator would then have to agree with their concern for the issue, listen to their side of the story and proclaim they will do something about it. After this, tying in your idea to the issue they originally had would have them follow it.
Is your intent to have this deep seated belief known, by the reader, to be a from of manipulation? What about the re-telling of old stories which are layered in increasing coats of "badassery" with each telling. Maybe a slightly more naive and playful angle on the whole thing but I've always loved the idea of heroic myths originating from what might have been the ancient equivalent of a lads night out.
