A narrative is the story a society tells itself about an issue: who it affects, whose responsibility it is, and what a reasonable person does about it. It is rarely settled in a single moment. It settles through repetition in ordinary places, such as a conversation at home, a post shared in a college group or a question raised at a ward meeting, until one way of seeing the issue begins to feel like common sense.
This is why lived experience carries so much weight. When the person speaking has been through what they describe, the story has a specificity that no campaign brief can supply, and it reaches others through relationships they already trust. It is often also the clearest way into an issue that seems complicated from the outside, because people tend to describe an issue through the ordinary moments in which they meet it. Research on social norms has shown consistently that people change what they do when they see people like themselves changing.
A narrative built from many such voices does not depend on an outside messenger to stay alive. The community keeps returning to it, because it is their story, and that is what allows it to outlast the programme that began it.