Most of us have been rejected by a potential partner before. It's painful, but we learn to deal with it with good grace. Frollo didn't do that in 'The Hunchback of Notre Dame.' He simply set about burning Paris to the floor to get what he wants.
This scene is particularly pertinent today, as it portrays Esmeralda as being at the mercy of a cruel tyrant who'll use terror and violence to have his own way with her. Not exactly a great message.