Historically, peace museums are antiwar sites displaying the human costs and suffering of war to educate against violence and promote peace. Some are also the repositories of the material culture of peace displaying art, banners, photographs, and documents of antiwar and social justice movements. Exhibits include themes of nonviolence, disarmament, conflict resolution, peacekeeping, reconciliation, cultural diversity, and environmentalism. Some peace museums and centers emphasize popular peace symbols and figures; others provide alternative narratives about conscientious objection or civil disobedience; and still others are sites of persuasion, challenging the status quo about issues of war, peace, disarmament, and related issues. These sites reflect the tug of war, politics, and debates surrounding history and memory.