The document discusses arguments for why capital punishment is unnecessary. It presents three main arguments: 1) Capital punishment does not actually protect society and innocent people are sometimes sentenced to death, 2) There are alternative forms of deterrence that are equally or more effective than the death penalty at preventing crime, and 3) Retribution is not sufficient justification and criminals can be punished through other means such as life imprisonment without parole. Examples are given supporting each argument, such as data showing low murder rates in European countries that have abolished the death penalty.