The Digital Millennium Copyright Act (DMCA) is a law that was passed by the United States Congress in 1998. It's purpose is to help protect people's copyright rights. Copyright is a type of law that protects the ideas and creations of people, like books, music, movies, and software. The DMCA makes it illegal to copy, distribute, or make a copy of someone else's copyrighted work without their permission. It also protects online service providers from being held responsible if someone uses their service to do something illegal with someone else's content. With this law in place, it is much easier for creators to protect their intellectual property.