When communicating your ideas through art or discussion, you will run into the premade narrative that defines the others individual identity. This narrative is unique however present on all of us, and it determines our biases. Most people are not consciously aware of the roots of their biases in their personal narrative. The subconscious root makes the ability to commutative directly with narrative subliminal messaging. The ability to establish direct communication between your conscious analytical mind and their subconscious narrative allows you to bypass the arguments they have built against, logic itself. Additionally, it lets you connect with the audience even when everything in their emotional and analytical is resisting your conversation.
Narrative is a powerful tool that needs to be accompanied by the task of letting the other person chose whether to put your ideas into their narrative. This consent is what keep what you are doing art and not propaganda.