A social engineering tactic that consists in using someone's good reputation or visibility to promote harmful ideas in order to push people to agree with them.
First, a certain character from among the elites is chosen on the basis of their ability to appeal to the masses. It could be for his/her charisma (a political leader), his/her academic credibility (a professor), his/her good looks (an actor) or his/her innocence (a little girl).
Second, the selected character is instructed to do or say things that everyone would recognize as good or true without in any way compromising the status quo; the substance of his speeches must be simplistic and obvious enough that even a kid could understand them and agree with them, while their form must be polished enough to make it sound like some deep philosophical truth.
Third, the selected character is given an enormous visibility; he will start being promoted by major media outlets, giving speech before vast audiences, making appearances on tv shows, writing books or articles for newspapers and so on, until everyone will know him and hail him as some sort of hero and/or genius.
Finally, once reached widespread popularity, he will be trained to promote dangerous and anti-liberal ideas so that people will easily accept them just for having been promoted by their guru, or instead to attack other good (but actually useful and potentially revolutionary) ideas so that people will reject them for the same reason.