Being pro-life and supporting a death penalty for murder is not a Biblical contradiction.
I know, I know, I know. But the way I look at it, God is in the best position to judge and punish. I couldn't live with myself if I, acting as a judge or juror senteneced an innocent person to death. And it does happen. With that said, if we absolutely must have a death penalty, then I would agree if the evidence is a clear-cut and undistputable video or photographic real-time recording beyond any reasonable doubt. By that standard, this guy should fry.