I'm really torn on this one.
If you have someone that is a repeat offender - be it murder or any form of child abuse - then they are dangerous to society, and should be permanently removed.
If it's a first time offence, they should be incarcerated, with regular psychological reviews. If they show no signs of genuine remorse - then execute them, cos they'll only end up in the category above.
That would be ideal if the justice system was 100% accurate in its guilty / non guilty verdicts.
However, it isn't. What about the poor sods that get framed or falsely accused, or just let down by poor legal representation ? How could their execution, which in effect would be murder, be justified ?
As no justice system can be infallable, how can it justify a death sentence ?
That's my personal feelings on it, and why I'm torn in my views.
Bull!