People do not change that fast.
“How we view the past has a tremendous influence on what we think about the present. In particular, the tendency to view the distant past as a time of unrestrained barbarism provides us with both an unearned sense of superiority and often a dangerous hubris – ‘we’re not like that anymore, that can’t happen anymore – people in the past were just stupid.‘ But they were not just stupid or just maniacs – they were people. People are people, no matter when they lived.”