Justice isnt conducted by omnipotent and all-seeing divine being, but by simple human with human flaws, so we have to accept an error margin. Some were killed/imprisoned and were innocent, some were released and were guilty, both situations are bad. The law and the justice cannot be based on a precautionary principle, else we can ban prison and all form of punishment.
If we weight lives against lives, how many of them has been lost by soft judgement? If there was 10 times more people dead by the hands of a former inmate, than innocent people executed, would that be enough of an argument?
Those sentences are also written by someone who would like to ban remand in custody, imprisoning someone who still hasnt been found guilty is wrong on so many levels. But as long as he has been found guilty why stop at life imprisonement is above my head.
If I love debating too much dont hesitate to tell me, I feel we may be going off-topic