General Discussion
In reply to the discussion: If you support the death penalty, you support killing as revenge. [View all]morningfog
(18,115 posts)The death penalty comes after an arrest, a conviction and a sentence. The point is there is no justification to that process resulting in a sentence of death. The only reason for supporting the DP that withstands logic is that the supporter wants to avenge the crimes of the convicted and they want to do that through killing.
Your Hitler hypothetical to be of any use to this discussion would resume the DP comes at the end of a conviction. Incarceration would be just as effective in preventing hypothetical future killings by him.
If you are asking whether in your time machine hypothetical one would be justified in killing Hitler before he engaged in genocide, I misunderstood your question and would not answer such a fantastical question as serious. That has nothing to do with the death penalty.