With its daring formalist freedom, Kira Muratova’s pointillist family portrait so perplexed and unnerved Soviet censors that it effectively halted her career for years afterward. A kind of psychological breakup movie, The Long Farewell traces the growing rift that develops between an emotionally impulsive single mother (stage legend Zinaida Sharko, transcendent in one of her first film roles) and her increasingly resentful teenage son (Oleg Vladimirsky), who upends her world when he announces that he wishes to live with his faraway father. The seemingly simple premise is rendered anything but by Muratova’s dreamy, drifting style, with off-kilter framing, editing, and dialogue continually pushing cinema’s aesthetic and expressive boundaries outward.