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n 1964, a chemical factory in Niigata Prefecture dumped mercury into the Agano River, the beginning of a manmade tragedy that would affect locals for years to come. Mercury poisoning led to high occurrences of Minamata disease, a neurological syndrome that causes severe physical and psychological ailments and death. Sato Makoto and his crew of seven spent three years in Niigata documenting the life and thoughts of locals.

Overview from themoviedb.org
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