The horror genre aims to create negative emotions in viewers by exploring primal fears of cannibals, demons, serial killers, ghosts, zombies and torture. Common elements include haunted locations like houses, hotels and caves, with props like knives, chainsaws and shotguns. Classic horror films date back to the early 20th century with titles like Dr. Jekyll and Mr Hyde, Frankenstein and The Wolf Man, while modern examples include The Shining, The Exorcist, Saw and Paranormal Activity.