Adolf Hitler

I have to do a biography on Adolf Hitler, but I am really stumped on how to start the introduction. I want to say something along the lines of, "The most hated man in history is Adolf Hitler. " I think that doesn't sound smooth for an introduction, so I am really needing any help. I would really appreciate any suggestions. Thanks in advance. And so today I found out that… Some call him a genius. Many regard him as charismatic. But no one can deny that Adolf Hitler is the most hated man in the world. Just an idea.