Mickey Rooney in Breakast at Tiffany's
One of the most offensive costumes and castings was in Breakfast at Tiffany’s. Mickey Rooney was cast as an Asian character named Mr. Yunioshi. Obviously, Rooney is not Asian. The costume and character was both very stereotypical and offensive. Naturally, back in the day, this wasn't a "big deal," but fortunately racism in Hollywood is no longer able to hide behind the guise of a gag joke.