So what? If you can't take people calling you on it, take it out of your sig. Freedom of speech is a two way street. If you're going to have it in there, people are going to call you out.
2 - It was designed to make people think about how relative all these labels are and how we judge people.
"Designed"? You've got delusions of grandeur. You put a dumb phrase in your sig designed to make some naive point that's been made a hundred thousand times already by lots of other faux-intellectuals. You didn't "design" anything.
If the south had won he'd be considered a war hero.
If the south had won he'd likely be considered a war hero by a small subset of the more insane southerners. No one else. Northerners would still hate him, as would any southerners who value a) human life, and b) a sense of honor and fairness in war. And quite honestly, a lot of southerners do fit that description.
Do you seriously think the country as it stands now, with the north winners of the war, would be celebrating whoever had managed to assassinate Jefferson Davis as a war hero?
He's no different then Washington was to the british during the war of independence.
Honestly, are you really fucking serious? George Washington did not walk up behind King George and shoot him in the back of the head. For crying out loud.
Or if you want a more modern angle, use Osama with the radical muslim. They lost, so he's a terrorist.
You've apparently taken the "history is written by the winners" line and corrupted it so completely that even that naive idea has lost all coherence.
And it is a naive idea because winners win for many real reasons - it is not by chance. And one of those reasons is that walking up behind people and shooting them in the back of the head is pretty much universally seen as a cowardly, heinous act that virtually nobody of any sane mind would support. Whichever side in any conflict engages in that kind of behavior is going to lose the public's support virtually instantly. Did Booth's action re-galvanize the south? No, it in fact turned Lincoln into a sympathetic figure. He helped the south lose. Sure, they had lost militarily before that, but his action made it easier for the north to reintegrate the south into the union.
Here, be my guest and change this passage in Wikipedia if you so believe in what you're saying:
Even in the South, sorrow was expressed in some quarters. In Savannah, Georgia, where the mayor and city council addressed a vast throng at an outdoor gathering to express their indignation, many in the crowd wept. Confederate Gen. Joseph E. Johnston called Booth's act "a disgrace to the age". Robert E. Lee also expressed regret at Lincoln's death by Booth's hand.
Your sig is moronic, so go ahead and leave it there if that's what you want people to think of you.