Like Once and The Commitments before it, Rich Peppiatt’s Kneecap (B-) follows in a grand tradition of Ireland-set ragtag musical dramas with a splash of comedy and political revelations thrown in for good measure. Set in post-Troubles Belfast, this Sundance tuner tells the origin story of the titular trio of real-life bandmates – Liam Óg Ó hAnnaidh, Naoise Ó Cairealláin, and JJ Ó Dochartaigh rapping a blend of English and native Irish rhymes for politically charged times. The characters become accidental activists as their Gaelic native tongue is on the brink of being banned by the government. Kneecap’s music sweeps viewers up into a ketamine-fueled, energetic series of episodes to encounter the meaning of pure defiance, laced with funny animated lyrics and playful surprises. Michael Fassbender helps ground the grassroots story as a martyred leader in exile. He’s head over heels better at acting than his fellow mates in the ensemble; by what the Kneecap bandmates lack in natural acting, they make up in manic energy. It’s a rollicking, rebellious rap revolution with a heart for preserving the best of one’s cultural heritage and a lovely sense of anarchy.