@ Usagi.
The wikipedia entry on Propaganda might be useful for you to have a read of.
http://en.wikipedia.org/wiki/PropagandaPropaganda is a form of communication that is aimed at influencing the attitude of a community toward some cause or position so as to benefit oneself.
As opposed to impartially providing information, propaganda, in its most basic sense, presents information primarily to influence an audience. Propaganda often presents facts selectively (thus possibly lying by omission) to encourage a particular synthesis, or uses loaded messages to produce an emotional rather than rational response to the information presented. The desired result is a change of the attitude toward the subject in the target audience to further a political agenda. Propaganda can be used as a form of political warfare.
While the term propaganda has acquired a strongly negative connotation by association with its most manipulative and jingoistic examples, propaganda in its original sense was neutral, and could refer to uses that were generally benign or innocuous, such as public health recommendations, signs encouraging citizens to participate in a census or election, or messages encouraging persons to report crimes to the police, among others.
Its an interesting article and has plenty of links to inform oneself of the use of such things.
The character of Jade Constantine is an Anarchist Propagandist
She is also an idealist, an agitator, an activist.
But it would be quite remiss of me to claim she had ever NOT been a character to use propaganda against enemies and foes.