I don't know. But the moral answer to me is simple. I should kill the killer. Actual laws which don't always reflect my moral sensibilities, squeamishness, and risk might stop me.
In real life it's not so simple. How would I know the killer was going to kill?
In real life it's not so simple. How would I know the killer was going to kill?
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.