Sex and violence in films refers to the presentation of sexuality, sex acts, and violent actions. Explicit scenes are commonly seen in art films, horror films, erotic dramas, and thrillers. A brief history showed that early films contained violence to create a sense of realism. Attitudes towards sex and violence in films vary across regions and countries due to differing cultural norms and censorship standards. While ratings systems aim to help audiences find age-appropriate content, education is also seen as an important way to develop self-censorship.