Since mention of the Nazis seems distracting, consider another film beloved of the Hollywood elite, "The Cider House Rules." Was there conflict? Of course. In fact, the main character had to be convinced in the most dramatic way possible that abortion was at times truly necessary. And was it propaganda? John Irving pretty much said so. And anyone who thought otherwise is probably someone who already thought abortion was necessary before the film came out for it. I think that's the case here too. The folks who have no problem with "Million Dollar Baby" are the folks who have no problem with euthanasia.
You really should look at what a film IS instead of what you want it to be to make your point. Million Dollar Baby would be propaganda if the Eastwood character were pro-euthenasia, or if he were against it and then thought it was good after having a part in it. It doesn't; it says he is condemned by his personal religion for doing that. Show me the Nazi propaganda that tells its followers "If you do this you are condemning your soul to damnation."
By your logic the people who liked The Passion are pro-crucifixion. I mean, it shows the crucifixion as a good thing, something willingly entered into, right?
For those ready to scream and shout: I am NOT saying that those who liked The Passion are pro-crucifixion--note the first words "By your logic".
All that said, while I found The Cider House Rules to be awful propaganda, I do not think that of Million Dollar Baby. I think it an honest question whether the Clint Eastwood character might act in that way.