What about the wrongful conviction and execution of an innocent person? In such a case, is the judge, jury, and prosecutor deserving of death too?

To me it seems that revenge only brings more bloodshed. Plus, if someone were so heinous as to commit, lets say, mass murder: then I doubt they value life in the first place, so maybe killing them would be doing them a favor? To me it seems that life in prison and isolation is more a punishment than the death penalty, anyway. Especially for someone who doesn't value life.

“I have always found that mercy bears richer fruits than strict justice.”
-Abraham Lincoln