Propaganda is most successful when self- propaganda is also involved. Self-propaganda makes it easier for individuals to justify their own actions as well as the actions of others. This can be due in part to the fact that belief in actions can greatly reduce cognitive dissonance.
The success of propaganda relies on a combination of self-promotion and the justification of actions. This process minimizes cognitive dissonance, making it easier for people to accept both their own actions and those of others.