I am not an economist, but I have learned that empirically, death penalty cannot deter the criminals. Data suggest that the crime rates went up and down regardless of death penalty.

However, I still strongly support death penalty. Death penalty is not a tool of reducing crime rate, but an ultimate punishment for those notorious criminals. It is based on a fair principle: blood for blood, teeth for teeth.

Some may criticize me that my rationale for advocating death penalty is not different from the thousands of years’ old Bible teaching. Yes, it is true. Given that the greed and sin of modern human beings are not different from those living in the Bible era, why should punishment be changed? Further, what kind of punishment is more suitable for those criminals than death penalty is?

It is also true that abusing the law or torturing the suspects are not rare. Some innocent people may be executed because the police have forced them to commit the charges. However, in an unjust society, eliminating death penalty won’t reverse the unfair treatments. Innocent people may still be sentenced to life time imprisoning. It has no difference from death. But lives of hardcore criminals are worthless. Trying to convert them is hopeless, and preserving their lives is wasting resource.

Death penalty is a must for a just society, except for that the execution of death penalty should be cautious.