From Real Life Villains Wiki
A Chinese propaganda poster featuring Mao Zedong.
To attract people, to win over people to that which I have realised as being true, that is called propaganda. In the beginning there is the understanding, this understanding uses propaganda as a tool to find those men, that shall turn understanding into politics. Success is the important thing. Propaganda is not a matter for average minds, but rather a matter for practitioners. It is not supposed to be lovely or theoretically correct. I do not care if I give wonderful, aesthetically elegant speeches, or speak so that women cry. The point of a political speech is to persuade people of what we think right.
~ Joseph Goebbels, propaganda minister of Nazi Germany.

Propaganda is defined as the dissemination of information, especially in a biased nature, for the purpose of promoting or injuring a political institution, cause or point of view. "Propaganda" is a derogatory term.

Because information could be interpreted in different narratives and information in the same narratives could be understood by people with different views, propaganda does not necessary mean disseminating fake information, despite fake information could be used as propaganda.

Despite definition of the word "propaganda" is likely widely accepted, there is no dissemination of information which is widely defined as propaganda. While certain narratives may be considered as "propaganda" in a group, they may be considered as "the truth" in another group.

Propaganda and Censorship

Propaganda and Censorship are broad categories of information manipulation methods. Propaganda is to promote certain narratives and censorship is to restrict certain narratives. Censorship could prevent certain propaganda from being challenged. Propaganda could convince people to accept and support censorship.