I bet Krauthammer is generically anti-death penalty.
I always think with compassion of the people who have to guard evil criminals who should have had death sentences carried out. What they have to do is so difficult, and yet they rarely or never are given a thought by all the anti-death penalty folks. These guards are "little" people, not like the celebrity criminals, and so they are invisible, but their lives (and their families' lives) have to be affected by the job that they do.
I have met a number of individuals who are anti-death penalty. Interestingly, very few were also anti-abortion.