Human rights are not an absolute truth. They are a matter of convenience and choice. In morality; what is right or wrong, what is lawful or unlawful; different societies choose differently. It is generally regarded to be wrong to kill a human being, in self defence it is allowed and in war; but it is not an absolute truth that it is wrong to kill or mistreat a person. There are all sorts of reasons why we should not allow murder, one being that by so doing we would increase the chances of ourselves being killed. There are no absolute human rights.
Roadside bomb kills five border officers in western Iraq (AP)
from the article: The psychology of Israel’s declining democracy