None of us here are anywhere near old enough to have lived through really hard times, have you ever even had no shoes? I still maintain that the will to survive is greater than any ideology, but we should try never to be put in a situation where we may find out. Yes, theiving and especially killing for survival is wrong, but given the nightmare-ish circumstances described, it will happen. Nothing can prevent it when the resources of the environment cannot support a population.
Very well, but I’m not sure that this very noble act would be replicated accross the population. Actually, I’m going to have to apologise here as I have mis-read the orginal posters question, he asked whether it would be justified/accepted, my answer is no, but that would not prevent it from happening.