The problem of death penalty causes heated discussions nowadays. Some people think that it can warn people from committing crimes. However, others feel that it is useless and immoral way of struggling against crimes.

From my point view, death penalty cannot decrease a number of crimes. Firstly, the innocent people can be killed by mistake. It is not a secret that sometimes absolutely innocent people are blamed and sent to prison. Later the court re-examines the case and cancels the punishment, but it is obvious that we cannot bring a life of an executed person back.  Secondly, death penalty is a kind of vengeance, so it may create the other vengeanc