Finian's Rainbow (1968)

A lovable rogue named Finian McLonergan absconds from his native Ireland with a crock of gold secreted in a carpetbag, plus his daughter Sharon in tow. His destination is Rainbow Valley in the (fictional) state of Missitucky, where he plans to bury his treasure in the mistaken belief that, given its proximity to Fort Knox, it will multiply. Hot on Finian’s heels is the leprechaun Og, desperate to recover his stolen crock before he turns human. Among those involved in the ensuing shenanigans are Woody Mahoney, a ne’er-do-well dreamer who woos Sharon; Woody’s mute sister Susan, who expresses herself in dance; Woody’s good friend and business partner Howard, an African-American botanist determined to develop a tobacco/mint hybrid; and bombastic Senator Billboard Rawkins, who wears his bigotry as if it were a badge of honor.

Complications arise when Rawkins, believing there is gold in Rainbow Valley, attempts to seize the land from the people who live there and makes some racial slurs while doing so. Sharon furiously wishes he would turn black himself and, because she happens to unknowingly be standing on the spot where the magical crock of gold (which is capable of granting three wishes) is buried, Rawkins does exactly that. Rawkins’ dog, who has been trained to attack black people, chases him off into the woods. Later, the sheriff returns with the district attorney, who threatens to charge Sharon with witchcraft unless Rawkins is produced.