Against, mainly because we can't absolutely determine guilt or innocence, and we are biased towards finding the middle class white person innocent and the poor ethnic person guilty. If we had a way of absolutely determining guilt or innocence, I'd be in favor in the case of serial killers and people who torture their victims (often the same people).
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.