Great art doesn’t have to be explicit in order to be powerful. A good example can be found in *The Grand Illusion*, a 1937 French film directed by Jean Renoir, celebrated as the best piece of anti-war cinema despite not showing the war directly. The plot is set during the First World War, or the Great War as it was known at the time of production. In 1916, French aristocratic aviator Captain De Böeldieu (played by P…