Argument: Individuals are executed on murder charges whom deserved manslaughter
"Thoughts on the death penalty". Retrieved May 1, 2008 - "The person convicted of the murder may have actually killed the victim and may even admit having done so but does not agree that the killing was murder. Often the only people who know what really happened are the accused and the deceased. It then comes down to the skill of the prosecution and defence lawyers as to whether there will be a conviction for murder or for manslaughter. It is thus highly probable that people are convicted of murder when they should really have only been convicted of manslaughter."