In Hirokazu Kore-eda’s “Monster,” competing for Palme D’Or, a small boy and his mother, the father dead and buried, the boy’s in school and the mother works in a dry-cleaners. At the start of the film a building in their neighborhood catches fire and they watch from the balcony, mother and son looking more like two friends. She’s carefree, unaffected by the pressures of raising a son but vigilant nevertheless. They place a small cake with candles in front