I don't know how this came into my head. Anyways, in which of these circumstances would you kill or seriously hurt a person?
1- A person has gun on you and MIGHT kill you.
2- A person has a gun on everybody you love and will SURELY kill one of them.
3- A person is running away with all money you've earned in life.
4- You hear a terrorist planning to bomb a place. You know it'd be too late if you call the cops.
Now, in all the situation, you've a fair chance of killing/hurting the person without dying. What would you do?