Education teaches people how to think, while propaganda teaches people what to think.
Communism and fascism or nazism, although poles apart in their intellectual content, are similar in this, that both have emotional appeal to the type of personality that takes pleasure in being submerged in a mass movement and submitting to superior authority.
There exists a “fear of freedom” of selfhood, which makes people want to submerge themselves in the mass and confession is one of the obvious means by which they can do so, for thereby they lose those traits which cause them to feel separate.
Propaganda by censorship takes two forms: the selective control of information to favour a particular viewpoint, and the deliberate doctoring of information in order to create an impression different from that originally intended.