However, others support that death penalty is violent and inhuman itself that is why it can not reduce injustice between humans .
... well, in my view there are many more important reasons why people are against death penalty. One such reason is that the danger of the innocent being wrongly executed. Also it is not deterrent and crime rates have not gone down.
In my opinion , mostly this way of punishment is unacceptable .However occasionally it can be the best solution of potential future problems which could be caused by those people . In this essay I will describe both aspects of the issue and confirm my opinion wish facts
These are the last few lines of your introduction. However, it is good if you concluded your intro with stating your opinion.