In many countries across Europe, a new ideology is increasingly captivating young people: Islamism. They radically oppose our society and constitution, and some even openly express sympathy for the terrorist actions of the Islamic State (IS). "I don't believe in democracy," says a ninth-grade student who suddenly comes to school in a long, dark garment, "I believe in the Quran." The class teacher is taken aback. How should she respond? What can schools, parents, educators, and trainers do to address such developments? The book provides a wealth of case studies, practical tips, and experiential knowledge from the author's collaboration with school administrations, domestic intelligence, police state protection, youth work, Muslim organizations, and professionals in intercultural education.