Just as a thought experiment, I'd like to see what you would do in this situation:
You're homeless and cannot afford any meals. You are slowly dying and have no options. Assume something is in the way of getting help. If the opportunity arose to kill somebody and be caught for it in a safe and secure way (ie. not getting shot by a bystander), would you do that for the opportunity to go to jail for your life to be fed, clothed and washed? Basically, would you sacrifice the life of someone else for the security of yours?
*Suppose the death penalty is not an option as well