That's the crux of 'Hellfire', the villain song from Hunchback of Notre Dame. A core part of that is the villain, Frollo, is responsible for persecuting Roma/'gypsies' in Paris, and the fact that he finds one of them, Esmerelda, attractive messes him up even further, given the combination of his bigotry and his strict Puritan beliefs (at the end he decides that he'll propose to her, and if she rejects him, he'll have her executed).

To be fair as a comparison, the Hunchback of Notre Dame is probably one of the heaviest Disney films, especially in terms of how relatively grounded it is. Most Disney villains are a little bit more fantastical, even if as evil in the abstract.

>“Hellfire,” perhaps the single greatest Disney villain song, is the darkest of them all, as Judge Frollo reveals the unquenchable lust for Esmeralda that’s driven him to unimaginable evil, and contrasts it with his strict, austere religious beliefs.

I assume this is what was being referenced

This is probably referring to a somewhat controversial song from The Hunchback of Notre Dame, "Hellfire," which is sung by a villain and is basically all about this.