Doesn't it anger you when you see someone speaking in support of the death penalty?

If You Murder or kill an innocent person you should expect to forfeit your own life. The Death Penalty is not given lightly.. Once someone kills another what is to stop him from killing again?Will you then support the Death Penalty for this Murder a second time.Or will you still want to forgive him ? You are quick to anger for the simple act of someone having an opposite opinion to you ,but want to tell others to forgive the act of Killing another Human being without good reason.