The Morality of No Holds Barred Arguments
For example, say you are having a debate with someone about the efficacy of prayer or the existence of the Afterlife, and you discover that they are terminally ill. On a purely rational level, this realization should not affect your argument, but is it the right thing to do from a human perspective. Or is it better to either acquiesce or just drop it altogether?
Another example. Say that you are arguing about some aspect of the Holocaust, and you find out that the person is a survivor.