Capital Punishment: The Just Punishment for Serious Crimes Justice must be done. Capital punishment is the just punishment for serious crime offenders and must be imposed. First, the basis of a punishment must be just and fair to both the victims and the offenders, and definitely capital punishment serves this purpose by the "a life for a life" principle. Also, it is an effective crime deterent which , by simply incapacitation of the criminal, the chances of committing crimes of that criminal is eliminated. Potential serial killers could not have been serial killers if they were executed after the first murder. Furthermore,