Of the competition titles I saw prior to before the weekend, among my favorites was Poetry, by Lee Chang-dong, whose earlier Cannes entry, Secret Sunshine, remains one of the great examinations of religious belief in contemporary cinema. The South Korean writer-director's protagonist is exceptionally rich: a 60ish grandmother coping with financial difficulties and the early stages of Alzheimer's. Her grandson, whom she supports, commits a terrible crime with a group of other teen-aged boys, resulting in the death of a female student. The crime is to be swept under the carpet by local school authorities. How the protagonist's actions affect this plan, and how her enrollment in a poetry appreciation class provides the story with its through-line, occasions one of the heartening glories of the filmgoing year.