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Exorcism is the practice of evicting demons or other spiritual beings. This practice is quite ancient and part of the belief system of many cultures and religions. There are different types of exorcisms. Exorcisms can be performed on people, animals and places. These rituals are done by people called exorcists. Exorcisms are usually done for religious reasons. The reasons vary, and the exorcisms can be different based on religions and which exorcists does them.