We have judges who are appointed because of their knowledge of the LAW,and as such Judge the cases on the law and all aspects of the case.
NOT on Emotion and the call of the public for retribution,in the old way of *An Eye for Eye".
As we know the media beat up things and most of the time and do not take into account a lot of other parts of the case.
Let the Judges do the judging and not heed the call of the Mob.
Nobody is perfect,and as such judges and the parole boards can get things wrong,but you will probably find that in a big percentage of the time they are Right.
Even the best can be conned,as it has been shown on this site in the past.
Cheers