Anti-Shi'ism is a kind of prejudice that some people have against people who practice the religion of Shi'ism. People who are anti-Shi'ism don't like people who practice Shi'ism and don't think they should be able to do things that other people do. They might try to keep Shi'ism people from visiting certain places, or even going to school or having jobs. It's like they don't want Shi'ism people to be treated the same as other people. It's not fair, and it's wrong.