Sophie's Choice

 Spoiler Alert!

In the key part of the movie, Sophie is a mother of a boy and a girl and is entering a concentration camp.  The head NAZI tells her that she can keep only one of her children and if she doesn't choose, he will have both of them killed.

For a long time, it troubled me about the moral course for her, but I eventually landed on this:  She should respond, 

"I will not choose.  You can kill none of us, all of us or some of us.  This is in your power, but I will not be complicit if you choose to do evil."

One might say, "So they kill both of her kids instead of one"  Maybe they do that, or maybe they kill neither or choose one randomly.  Why should one assume that you can trust the word of a person who's openly talking about murdering innocent people?

Maybe they are evil and before killing you all, they want the added joy of seeing a mother betray her children.

Sophie's choice is clear, though whatever choice she makes, the blame is not on her--she had no role in creating this situation.