You could look at any country in the world and find leaders that were just as bad and even worse throughout history. I think the takeaway should be that shitty people exist. Some of it is a product of the times, some of it just being awful people. Shitty people have and always will exist.
Edit: With these downvotes it almost seems like y’all thought I was defending them. I absolutely was not defending them. :)
Can’t deny that. The ratio of good/bad presidents is definitely abysmal.