This book documents the history of religious persecution, especially focusing on early Jewish and Christian experiences and the culmination of horrors in the Nazi era, in which six million Jews, over a million Catholics, and many others were put to death for their beliefs. The book then focuses on the many types of religious intolerance in the world today, particularly the genocide against Christians in the Middle East and Africa, and resurgent Anti-Semitism in the Middle East, Europe and even the United States. The book concludes by discussing how we work together to preserve the ancient civilizations that provided roots for both Christians and Jews so that their populace and historical artifacts are safe from destruction and their cultural and religious heritage are preserved.