Charlie Chaplin use ("Easy Street", 1917). He often explored these topics ironically, making comedy out of suffering. Social commentary was a feature of Chaplin's films from early in his career, as he portrayed the underdog in a sympathetic light and highlighted the difficulties of the poor. Later, as he developed a keen interest in economics and felt obliged to publicise his views, Chaplin began incorporating overtly political messages into his films. "Modern Times" (1936) depicted factory workers in dismal conditions, "The Great Dictator" (1940) parodied Adolf Hitler and Benito Mussolini and ended in a speech against nationalism, "Monsieur Verdoux" (1947) criticised war
Charlie Chaplin registered for the American draft, but he was not summoned by either country. Despite this criticism Chaplin was a favourite with the troops, and his popularity continued to grow worldwide. "Harper's Weekly" reported that the name of Charlie Chaplin was "a part of the common language of almost every country", and that the Tramp image was "universally familiar". In 1917, professional Chaplin imitators were so widespread that he took legal action, and it was reported that nine out of ten men who attended costume parties dressed as the Tramp. The same year, a study by the Boston Society for Psychical