Here's why:
* Piano scene: In the film, a group of criminals terrorizes a family. The father is brutally murdered, and his head is impaled on a piano key, a disturbingly memorable scene.
* Dog being shot: The family's dog is also shot and killed by the criminals.
While the movie is considered a classic and influential horror film, it's extremely violent and disturbing. It's known for its graphic depiction of violence and might not be for everyone.
If you're looking for more details about the film, you can easily find information about it online.