At the end of ‘Coco’, the town where Miguel lives has banned Ernesto de la Cruz and has glorified Héctor Rivera. I’m assuming this is because Miguel told them about it.
However, Why would the town authorities believe Miguel?
I mean, if I went to my town’s authorities and told them that the town’s most famous person had murdered his partner and plagiarised his songs, and said that the person to be remembered was a nobody (who happens to be my ancestor), they would have thrown me out.