S is for...Strange Attraction

I went to a Fancy Dress party just before Christmas. The theme was the second World War and off i went to the fancy dress shop and hired a Hitler uniform complete with fake moustache and all the Nazi bits and pieces. When i got to the party, the majority of men were either Hitlers, SS officers or run of the mill Nazis.
It seems that on some sub-conscious level we are fascinated by the bad and evil ones throughout history.
Given a history book we will read about Genghis Khan, the Vikings, Napoleon or Vlad the Impaler before we turn to the pages about Gandhi, Mother Theresa or the Suffragettes. We just seem drawn to read and find out about just how evil mankind can be before we discover the kind and caring side of our history.
Don't know why, maybe a psychologist could explain it and probably it wouldn't be very nice to read why i and most of my male friends would choose to dress up as our one time enemy rather than our very own Tommy's.
Must be more to it than they had a better and more distinguishable uniform although if you did glance back through the history book, the ones doing the invading and slaughtering did have distinctive uniforms from the horned helmets of the Vikings to the jack boot and swastika of the Nazis.
If there were two television shows on at the same time, one about Josef Mengele and one about Walt Disney, i would bet a pound to a penny that the Mengele documentary would get the most viewers.
Maybe it is something deep down inside of us that just draws us to the evil side, not admiration but a fascination of us humans at our most ruthless.