This answer may contain spoilers of books and movies you have not read or seen... specifically Harry Potter 1-7 and Star Wars Chapters 1-6. Askville you have been warned. ;) ***SPOILER GUARD*** Ladies and gentlemen of Askville allow me to convince you of my opinion.
Lord Voldemort is more evil than Darth Vader... Eeeee-vil! What is evil? Is evil... wearing black capes?
Well they both do that. Can you truly judge a man's heart by his fashion sense or his lack of it? I think not.
Is evil... threating youngsters and attempting to convert or kill them? They both do that, too. Who is more evil in this category?
Vader tried to kill his own son in episodes 4, 5 and 6. He also tried to kill his daughter in 4, but I don't think he knew it at the time. Voldemort most likely has a higher death count total, and he did kill the Riddle family.
Still, going after younglings (as they are called in episode 3 of Star Wars) is just heinous. It looks like Voldemort killed more adults, but Vader killed ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.