The power of rhetoric is all over. We see it in elections, the news, commercial advertising, and government propaganda. When it comes to propaganda, you must first understand rhetoric; how it is used on you, and why it is done. Rhetoric is described by famous philosopher of ancient Greece, Aristotle, in three terms: Pathos, Logos, and Ethos.
1) Pathos: The Emotional Appeal (Pull the emotional strings)
2) Logos: The Logical Appeal ("facts", Logic, etc.)
3) Ethos: Appeal to Credibility (Convince the audience the "seller" can be trusted)
Most advertisements and propaganda will use a minimum of two out of the three (three being the most effective yet most difficult).
Please see this video by Daniel Kuglich on rhetoric for more details as well fantastic examples:
Additional Information on "How To Use Rhetoric To Get What You Want":
Resource:
Camille A. Langston, Ted-Ed: https://ed.ted.com/lessons/how-to-use-rhetoric-to-get-what-you-want-camille-a-langston