Carnism is a belief system that most people don't realize exists. It is the belief that it is okay to eat animals. Even though eating animals is something that most of us have done since we were kids, carnism is an "invisible belief system" that is built into our society. It tells us that it is okay to eat some animals, but not others. Carnism also tells us that it is normal, natural, and necessary to eat animals, even though for many people it doesn't feel right. Carnism also makes it so that we don't think about where our food comes from and how it is made, but instead we just accept it.