You will see all the techniques for inspiring mobs in liberal behavior.
There are three main elements to putting an idea in a crowd: affirmation, repetition, and contagion. The effects takes time, Le Bon says, but "once produced are very lasting." It's the same reason annoying TV commercials are so effective. "Head On! Apply directly to the forehead. Head On! Apply directly to the forehead. Head On! Apply directly to the forehead."
Affirmation is the creation of a slogan, free of all reasoning and all proof." Indeed, the "conciser an affirmation is, the more destitute of every appearance of proof and demonstration," he says, "the more weight it carries." This is "one of the surest means of making an idea enter the mind of crowds."
Affirmation only works if it is "constantly repeated, and so far as possible in the same terms." The power of repetition "is due to the fact that the repeated statement is embedded in the long run in those profound regions of our unconscious selves in which the motives or our actions are forged. At the end of a certain time we have forgotten who is the author of the repeated assertion, and we finish by believing it."
Short slogans endlessly repeated create a "current of opinion" allowing "the powerful mechanism of contagion" to operate. Ideas spread through the crowd as easily as microbes, Le Bon says, which explains the mass panics common to rock concerts, financial markets, street protests, and Dennis Kucinich rallies. "A panic that has seized only a few sheep," he observes, "will soon extend to the whole flock."
Liberals have it down to an art: The cacophonous method of yelling until conservatives shut up just because they just want to go home, the purblind assertions -- No WMDs in Iraq! Civilian Deaths! Violence at Tea Parties! Head On! Apply directly to the forehead! -- and overnight the entire mass of liberals is robotically repeating the same slogans.
It isn't only in their incessant street demonstrations that liberals talk in slogans. This is how liberals discuss serious policy matters with the public. It's as if they're speaking to a vast O.J. Simpson jury, mesmerized by a pair of gloves and a closing argument that rhymes ("If it doesn't fit, you must acquit").