‘Hitler’s Children,’ a Documentary About Guilt by BloodQuiet, simple and soaked in sorrow, “Hitler’s Children” takes a stripped-down approach to an emotionally sophisticated subject. Tracking down five descendants of some of Hitler’s closest accomplices, the director, Chanoch Ze’evi, encourages them to talk about how their lineage has affected their lives. The coping mechanisms vary, but the shame and nagging guilt are shared. Monika Hertwig recalls the panic attack she suffered when a viewing of “Schindler’s List” revealed the full monstrosity of her father, Amon Goeth. For Bettina Goering, the great-niece of Hermann Goering, a kind of peace has been achieved...