Only 68 = still dangerous if the reasons he did this in the first place have not been addressed definitively. Our nation has lost its way.
He can drive a vehicle into a crowd real easy.
He was 33 when he killed them all. I’m not 60 yet, but I don’t think my world view has changed a whole bunch since I was 33. Although perhaps 35 years in prison changed him. For the better...or for the worse...., I do not know.
But - those kids are still dead, and he is enjoying life as a free man.