Unless he was a little child that walked around with the thin moustache and in a third reich uniform or wore a sign that said "hitler clone" I imagine it would be hard to tell him from any other child. This issue was discussed at some length in a PBS documentary. You could clone millions of ancient people and if raised in the US, they'd be indistinguishable from normal people. It's not like the clone of an ancient egyptian will run off to the desert and start building pyramids. (although I can just imagine, the clone is at home, at the dinner table, making pyramids from his mashed potatoes, muttering "this means something") I'm not really sure I'm for human cloning, but I wouldn't be any more bothered that they used hitler cells to do it, for a few reasons:
1)Hitler was a puppet of the heads of the Nazi party.. until he went insane.
2)The fact that he came into power was the result of a conjunction of a humiliated, impoverished Germany, an arrogant Europe and US, the inherent idiocy of people when they get into groups larger than 3, and a power-hungry political party.
3)His charisma and intelligence were more likely influenced by his environment than by any particular genetic code.
4)If any groups do decide he's their reborn savior or the devil escaped death, it'll just go to show how patently absurd they are. And, frankly, I'm all for making groups look hypocritical and stupid.
5)If they took hitler and made him look less obvious and shave off the moustache, I think you'd find that he looks pretty much like any other short german man. I wouldn't be able to pick him out of a lineup, that's for sure.
The crux of cloning is that we must realize that these are people we're playing around with now. Without getting into the "when is it a person" debate, suffice to say that a clone is no different than any other person. They would have the same natural rights as any other human being: life, liberty, property. Another post mentioned that we could send clones into space and not worry because they're "just clones". I'm sure that the cloned people that get strapped into the spaceship would feel differently, though.
I think that the most appaling part of WWII wasn't the holocaust, but the medical experiments done on the Jewish people. Specifically I remember testing on a human's resistance to a vacuum, and that we know that we can survive a higher vacuum is it's gradually applied all came from the disgusting research done on what were considered "sub-human" human beings. It would be horrid if we began considering cloned human beings similarly, and began treating them like really big gunea pigs (sp).