The document traces the history and evolution of the horror genre from the 1920s to present day. Early horrors from the 1920s featured mystical creatures like vampires and used darkness and costumes to scare audiences. By the 1960s, horrors depicted human monsters as audiences feared the potential for evil in people. Modern horrors continue adapting to reflect societal fears, from radiation in the 1950s to terrorism post-9/11. Throughout, the genre has increasingly depicted human rather than supernatural threats as audiences became desensitized to traditional monsters.