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 judgment that a murderer should not be allowed to claim them.

Self-defence is recognised by all legal systems. Where a choice has to be made between the lives of two or more people, the life of the innocent is given preference over the life of the aggressor. This is consistent with section 33(1). To deny the innocent person the right to act in self-defence would deny to that individual his or her right to life. The same is true where lethal force is used against a hostage taker who threatens the life of the hostage. It is permissible to kill the hostage taker to save the life of the innocent hostage. But only if the hostage is in real danger. The law solves problems such as these through the doctrine of proportionality, balancing the rights of the aggressor against the rights of the victim, and favouring the life or lives of innocents over the life or lives of the guilty. But there are strict limits to the taking of life, even in the circumstances that have been described, and the law insists upon these limits being adhered to. In any event, there are material respects in which killing in self-defence or necessity differ from the execution of a criminal by the State. Self-defence takes place at the time of the threat to the victim's life, at the moment of the emergency which gave rise to the necessity and, traditionally, under circumstances in which no less-severe alternative is readily available to the potential victim. Killing by the State takes place long after the crime was committed, at a time when there is no emergency and under circumstances which permit the careful consideration of alternative punishment.

The examples of war and rebellion are also not true analogies. War and rebellion are special cases which must be dealt with in terms of the legal principles governing such situations. It is implicit in any constitutional order that the State can act to put down rebellion and to protect itself against external aggression. Where it is necessary in the pursuit of such ends to kill in the heat of battle the taking of life is sanctioned under the Constitution by necessary implication, and as such, is permissible in terms of section 4(1). But here also there are limits. Thus prisoners of war who have been