Before Adolf Hitler came along and seized the title of the most evil person in the world, who was commonly cited as the embodiment of evil? The Egyptian Pharoah in the story of Exodus.
In the 18th, 19th, and early 20th centuries, many Americans and Europeans had a firmer grasp of the bible than of the history of genocidal dictators. Orators in search of a universal symbol for evil typically turned to figures like Judas Iscariot, Pontius Pilate, or, most frequently, the Pharaoh of Exodus, who chose to endure 10 plagues rather than let the Hebrew people go. In Common Sense, Thomas Paine wrote: “No man was a warmer wisher for reconciliation than myself, before the fatal nineteenth of April, 1775 [the date of the Lexington massacre], but the moment the event of that day was made known, I rejected the hardened, sullen tempered Pharaoh of England for ever.” In the run-up to the Civil War, abolitionists regularly referred to slaveholders as modern-day Pharaohs. Even after VE Day, Pharaoh continued to pop up in the speeches of social reformers like Martin Luther King Jr.
Also, this is a good line:
Generally speaking, hatred was more local and short-lived before World War II.