Revealing mistake: At the start of the montage in which Frollo ransacks Paris for the gypsy girl, the shot of the three soldiers kicking down the baker's door very briefly places the more distant soldier off to the right "in front" of the closer central soldier; this is a case of incorrect animation cel layering.
The Hunchback of Notre Dame (1996)
1 revealing mistake - chronological order
Directed by: Gary Trousdale, Kirk Wise
Starring: Demi Moore, Kevin Kline, Jim Cummings, Jason Alexander, David Ogden Stiers, Corey Burton, Tom Hulce, Mary Kay Bergman
Factual error: When Quasimodo and Esmerelda are on the roof of the cathedral, a piece of the roof breaks off and slides with them standing on it. The material creates sparks as it slides. The material would be either copper or (more likely) lead, neither of which can be made to spark.
Oafish Guard: All right, gypsy, where'd you get that money?
Esmeralda: For your information, I earned it.
Oafish Guard: Gypsies don't earn money.
Brutish Guard: They steal it.
Trivia: Two of the talking gargoyles are named Victor, and another is named Hugo. Victor Hugo was the author of the original novel 'The Hunchback of Notre Dame'.
Question: Why is everybody mean to Clopin?
Chosen answer: No one is mean to Clopin in the movie. But he is a gypsy and the people in Paris don't like the gypsies.