In media and in the minds of kids, the then-novel practice of trick or treating on Halloween was not quite innocent fun. The concept of going door to door and requesting candy on Halloween was virtually unheard-of prior to the 1920s, though it did have antecedents in ancient history. Joe Clark, Hulton Archive/Getty ImagesHelping restore the reputation of trick or treating were two familiar icons in popular culture. In 1951, Charles Schulz drew a series of Peanuts comic strips that featured Charlie Brown and his friends going door to door. For many, Halloween is a time to collect treats.