I just don't want a to see a situation like the following:
"Yes, we admit we all ganged up on him, but the way he defended himself against our attack was worse than anything we did to him; so, he should be punished, and we should all get away scott free!"
I would tread VERY CAREFULLY before advocating any 'princples' that smack of this, especially in the hearing of any Jewish men or women who have strong feelings about the Holocaust.
Uncle Ed