The best defense against propaganda: more propaganda. - Edward Bernays

If you can influence the leaders, either with or without their conscious cooperation, you automatically influence the group which they sway. But men do not need to be actually gathered together in a public meeting or in a street riot, to be subject to the influences of mass psychology. Because man is by nature gregarious he feels himself to be member of a herd, even when he is alone in his room with the curtains drawn. His mind retains the patterns which have been stamped on it by the group influences.

In almost every act of our lives, whether in the sphere of politics or business, in our social conduct or our ethical thinking, we are dominated by the relatively small number of persons [...] who understand the mental processes and social patterns of the masses. It is they who pull the wires that control the public mind, who harness old social forces and contrive new ways to bind and guide the world.

The engineering of consent is the very essence of the democratic process, the freedom to persuade and suggest.