Dark, warped death sitting with you at chow: and you don't know
Maybe you did, what seems a long time ago.
Green's troubled past wasn't part of the story at the time. His past produced attitudes that were in disconcerting proximity to what might be expected. And, allegedly, went way beyond what can be tolerated.
It should be mentioned that Green is not the only one charged in the rape and murder of a 14 year old girl. And the slaughter of her family.