Because the father killed no one. It is a question of the moral codes in a civilized society. Each and every one of us are responsible for our own actions. Guilt by association is a logical fallacy. You start going there and where does it end?

Fathers shall not be put to death because of their children, nor shall children be put to death because of their fathers. Each one shall be put to death for his own sin.

It may be true that this killer's father was irresponsible in keeping his guns secure, but we don't know that. The fact is this kid had a journal, a computer, and a facebook page where he posted his intentions to "shoot up a school" along with spooky stuff like pentagrams and he wore "Born to Kill" T-shirts. And, nobody saw this coming? Go figure.

Moreover, the similarities between Dimitrios Pagourtzis and Eric Harris, the Columbine killer, are eerie. They both kept journals about their intentions, they both obtained weapons illegally, they both wore black trench coats and high black boots to school, they both manufactured explosive devices, and they both used a shotgun. A Columbine first responder believes that Pagourtzis may have studied the Columbine killers and patterned his attack after them. But we don't know that either. Still the similarities are striking.

Because the father killed no one. It is a question of the moral codes in a civilized society. Each and every one of us are responsible for our own actions. Guilt by association is a logical fallacy. You start going there and where does it end?

Fathers shall not be put to death because of their children, nor shall children be put to death because of their fathers. Each one shall be put to death for his own sin.

It may be true that this killer's father was irresponsible in keeping his guns secure, but we don't know that. The fact is this kid had a journal, a computer, and a facebook page where he posted his intentions to "shoot up a school" along with spooky stuff like pentagrams and he wore "Born to Kill" T-shirts. And, nobody saw this coming? Go figure.

Moreover, the similarities between Dimitrios Pagourtzis and Eric Harris, the Columbine killer, are eerie. They both kept journals about their intentions, they both obtained weapons illegally, they both wore black trench coats and high black boots to school, they both manufactured explosive devices, and they both used a shotgun. A Columbine first responder believes that Pagourtzis may have studied the Columbine killers and patterned his attack after them. But we don't know that either. Still the similarities are striking.

Why not execute the moron father for murder?
"Because the father killed no one. It is a question of the moral codes in a civilized society. Each and every one of us are responsible for our own actions. Guilt by association is a logical fallacy. You start going there and where does it end?"

OK the father(the good guy with the gun) owns the guns and is responsible(same as a car). So hold him responsible for all the damage caused. Take all he's worth, house, vehicles, SS, any retirement, future earnings, everything and divide with the victims family.