I am simply amazed (and not in a good way) how cavalier you all are being. Lucas explicitly modeled the Imperial Forces after a cartoonized version of Nazism.
The 501st in the SW universe was the spearhead division in Palpatine/Sidious' Final Solution to the Jedi.
"It's just fiction" is no excuse. The Empire is evil. People with functioning consciences are not fans of evil.
Really? Come on...
I've read through this whole thread, and I have to admit, I find it fascinating. Immediately, everyone jumped on the original poster and mercifully made fun of them, and I myself, of course, agree with everyone that the opening poster's point of view is wrong and untenable. But I do think the question is more interesting than a lot of people here have given it credit for.
Our sense of morality in fiction is different from our sense of morality in real life. In other words, we feel different, morally, about the things that take place in fiction than we do about real-life equivalents. For example, we sympathize with Darth Vadar at the end of Return of the Jedi, simply because he turns good at the last moment. He dies a good man.
But IF Darth Vadar and the Empire were real, I don't think, frankly, that we would give a flying fuck whether Darth Vadar changed his mind at the last moment - he's a genocidal maniac, he's guilty of murdering billions of innocent people, and we would never forgive him.
In Silence of the Lambs, we actually like (or at least respect) Hannibal Lecter because a) he's the smartest guy in the room, and b) because we sense, somehow, that he will never eat Clarice.
But if Hannibal were a real person, in real life, regardless of his intelligence or his lack of desire to eat the cop who's been sent to question him, we would still despise him, fear him, and wish him dead. There would be no respect or sympathy or admiration wasted on this inhuman monster.
There are countless examples of this. We tend to forgive evil in movies, even within the context of the world of the movie, if there are any sympathetic elements to the character, or if they are terribly interesting or intelligent or funny or charming....whereas, in real life, even with those same characteristics, there would be no sympathy from us, or forgiveness.
It's as if fiction gives us permission to sympathize with or even enjoy a bit of evil, in a way that we can't, shouldn't, and wouldn't in real life. That's an aspect of art that I believe the opening poster has not taken into account. We are all unconsciously aware of this distinction because, as I said, there are countless examples of characters in films that we sympathze with, or even like, that, if they had real-life counterparts, we would despise (Travis Bickle in Taxi Driver, Darth Vadar, perhaps even the Doctor himself in Doctor Who....)
So -if people admire or enjoy fictional characters who have evil aspects, this in no way reveals anything about how they would feel if those fictional characters had real-life counterparts. As soon as they become real, people's moral views of them change - if Darth Vadar or the stormtroopers were real people, I promise you, opening poster, that people would not be prancing around dressed up as them.