A slogan is a short, easy-to-remember, attention-grabbing phrase that appeals to one’s instinct or emotions. It is easily understood by everyone and proclaims a very clear, unambiguous message.
Example of Propaganda: Mussolini coined, and was associated with, mottos that encompassed the Fascist spirit. His propaganda apparatus had at least fifty that were easily incorporated into speeches, posters, film, books, pamphlets, etc. The most famous is “Credere, Obbedire, Combattere” (Believe, Obey, Fight!), repeated in speeches, posters, and literature.