The experts disagree. According to Amnesty International, "A 2009 survey of criminologists revealed that over 88% believed the death penalty was NOT a deterrent to murder."
And the statistics prove it. As Amnesty also notes, "The murder rate in non-Death Penalty states has remained consistently lower than the rate in States with the Death Penalty."
Whether you're for it or against it, when dealing with life-and-death issues like the death penalty, it is important to know the facts and face reality.