When a member of my family was sent to prison, I came face to face with murderers once a week for a year.
There was this one man in particular who was doing a life sentence for murdering his wife; I heard the story of his crime from his own lips (how I ended up talking to him is a long and mostly irrelevant story).
He told me that what he had done was disgusting, but there is a rage inside every ordinary person that the vast majority will never come face to face with. He talked of literally seeing red - a blur of confusion and emotion - when he found her in bed with his best friend. He claims he can hardly remember picking up the knife.
Now you can sit in front of your computer screens and deal out death and judgement as much as you like, but when you come face to face with these people - really see the person behind the crime - you will realise that not everything is as black and white as you would like to believe. Never in his life had he been a violent person; do you look so harshly on so-called 'crimes of passion'? Are you so above violence that you can put a blanket over them all.
And what about the mentally ill? Is it their fault - do they deserve the punishment they so often receive?