http://ydr.inyork.com/ci_10219218
This is an interesting read.
The above link goes to a article in the York Daily Record (York, PA) about a guy who was forced to use his weapon to defend the life of another person, as well as his own life and family.
"I never thought I would be threatened in a situation outside my job or need to come to the aid of someone else being threatened. However, I would have been devastated had I awakened the next morning and read in the newspaper, or watched the television news, to see that one of those young women had been beaten and killed by Mr. Need because I chose to drive by and not intervene."
Sometimes, good people are required to do bad things to save themselves or others.