Jack Black and Jenny Slate can’t find the satire in The Polka Kings goofy true crime

Very late into the true-story comedy The Polka King, polka singer and entrepreneur Jan Dewan (Jack Black) is aghast when his wife, Marla (Jenny Slate), tells him that people associate her with his financial crimes. “You don’t know anything!” he protests in heavily Polish-accented English, and then comes the kicker: “I