When I visited Nazi death camps in 2014, I viewed spaces filled with the spirits of so many lives lost and witnessed the end result of evil, intolerance, and hatred. I left the gas chambers at Auschwitz and Majdanek that summer thinking that the sick, twisted ideology that drove the Nazis and was fueled by hatred and ignorance no longer existed in the 21st Century, especially in the United States. I naively believed Nazi ideology had ceased to exist with the end of World War II and the Holocaust.