I personally would rather have a thousand guilty people free than one innocent person executed. That’s unforgivable in my book. If I could somehow be 100% sure, I might consider it appropriate.
http://www.startribune.com/462/story/1293237.html
How interesting that South Dakota’s first execution in 60 years is to a prisoner who pleaded guilty to the crime; and “Page has declined to make further appeals and has said that he wants to die.”