This essay is part of “Terrorists, Despots, and Democracy: What Our Children Need To Know,” a report just released by the Thomas B. Fordham Foundation. Our children are living in perilous times. To prepare them to preserve their heritage of freedom in this dangerous world, we must place education aimed at cultivating democratic citizenship at the heart of the school curriculum. Education for democratic citizenship has two central components. First, our young people should come to understand-and embrace-the principles of liberty, equality, and justice upon which this nation was founded. They should learn about the institutions that make self-government possible,...