Throughout history, some punishments have been opposed, the most famous of which is the death penalty. Therefore, today we see that the aforementioned punishment is not applied in many Western countries because such a punishment, firstly, violates many international conventions, and secondly, from the opponents' perspective, the aforementioned punishment violates the principle of proportionality between the crime and the punishment. In any case, this research, which was compiled in an analytical-descriptive manner and using a library method, answers the question of which of the two options of "implementing" and "abolishing" the death penalty is beneficial and scientific.
Although both groups of supporters and opponents have presented their arguments, reason and science indicate that the opponents' reasons are more justified because the criminal is like a disease that must be treated; a mistake in execution cannot be compensated; by executing the criminal, his family is also punished; and there are social predisposing factors that go hand in hand to make a person commit a criminal act. In contrast, supporters believe that justice is guaranteed when the murderer is executed in front of the victim. The application of the death penalty entails a form of social discipline and also relieves the government of many economic costs.