The world has not previously experienced migration to the extent that it does today, and the situation is likely to intensify in the future. Millions of people leave their homes because of war, persecution, and other disasters, or simply in search of work. Migration often creates problems in the receiving areas, and ignorance often engenders hatred toward newcomers. The school and the school library have big responsibilities in neutralizing this hatred. Examples are provided of how fiction can be used as a preventive measure in working with such problems. Fiction is one of the most effective means of making children understand what is happening and making them respect other cultures and religions. Fiction is often superior to fact because facts often become abstract, while fiction, since it is about "real" people, makes the problems questions of human beings. Examples of children's fiction that can be used to promote understanding are given, drawing on Swedish culture and children's literature. (Contains 17 references.) (SLD)