There's always someone who will spread the propaganda that the villain is actually the hero. When you talk about Hitler this person will tell you that Hitler did so many wonderful things for German economy for this and that. Hitler was a goddamn mass murdering maniac and don't let nobody tell you otherwise. German economy and all could have been bettered even without the mass murdering, so what do you say to that? There is always a twisted or misled person who derives a twisted satisfaction from worshipping the villain. Hitler and his rule did horrible things to innocent people and no amount of economic growth is gonna offset that.
Karna is a villain from Mahabharata. The notion of him being the actual good guy is so popular that books have been written on it. Some of them just state some things and leave it to the reader to conclude that Krishna was the actual villain and others downright say so. I think they do that because they are intimidated by the character of Krishna. They are afraid that they can never be so fair and just and have the courage to do or stand by what is right. Such people seek to hide from the truth by deluding themselves. Finding justifications like being of "liberal thought", "different". And when someone comes along and gives an irrefutable argument they resort to bitching means. All this because they are afraid of seeking the truth, afraid that they are not strong enough to be a good person. I personally do not give a big deal to being different. I think I used to, but now I don't. Because see, Hitler was different! and look what that did! Nothing wrong in being a common man, now, is it? Taking cue from Russell Peters- Be a man! Do the right thing!