Qarmatians were a group of people who lived a long time ago in a place called Arabia. They had different ideas about religion and how the world should work than most people around them.
The Qarmatians believed that everyone should have an equal share of everything, which means that there shouldn't be rich or poor people. They also thought that people should be treated fairly and with respect no matter where they came from or what their beliefs were.
Because of their beliefs, the Qarmatians sometimes did things that other people didn't like. For example, they would sometimes take things that other people owned, saying that they should be shared with everyone. This made some people angry and caused conflict between them and the Qarmatians.
Overall, the Qarmatians were a group of people who had different ideas about fairness and equality than many others around them. While their ideas were unique, they sometimes caused conflicts with others who didn't share their beliefs.