"The death penalty is a warning, just like a light house throwings its beams out tot sea. We hear about shipwrecks, but we do not hear about the ships that the lighthouses guides safely on their way.  We do not have proof of the number of ships it saves but we do not tear the lighthouse down."
                                                        -poet Hyman Barshay
                                                                                  (prodeathpenalty.com)

• There have been several cases and studies done that prove potential murderers did not murder due to the fear for the death penalty, this proves that many innocent lives were saved and that the death penalty is a good deterrent.                                                  (prodeathpenalty.com)
• The death penalty certainly deters the murderer who is executed. The death penalty helps prevent future crimes because vicious murderers are killed to stop them from killing again either in prison or in society.
• Most potential murderers will reconsider killing anyone once they have realized that they could be executed. Capital punishment deters more than any other punishment, because most people fear death more than anything else.                                                      (deathpenaltyinfo.edu)