In theory, everybody buys the best and cheapest commodities offered to him on the market. In practice, if every one went around pricing, and chemical… - Edward Bernays

But when the example of the leader is not at hand and the herd must think for itself, it does so by means of clichés, pat words or images which stand for a whole group of ideas or experiences. Not many years ago, it was only necessary to tag a political candidate with the word interests to stampede millions of people into voting against him, because anything associated with "the interests" seemed necessary corrupt. Recently the word Bolshevik has performed a similar service for persons who wished to frighten the public away from a line of action. By playing upon a old cliché, or manipulating a new one, the propagandist can sometimes swing a whole mass group emotions.

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.

Propaganda is the executive arm of the invisible government.