Didn’t those maniacs in Columbine have guns in their rooms along with bomb making stuff in the garage. Of their parents.
And, yet, that’s another completely different situation. Now you are talking about NEGLECT on the part of the parents, and you are dealing with the actions of a MINOR. Again, a completely different situation. As far as the Columbine killers a case could be made that their parents were perhaps partially at fault for their CHILD’S actions. But, we could exchange ideas on THAT specific case for DAYS, really. (I lived in Denver when that happened, BTW).
Again, the actions of an individual should not condemn family members unless you can prove a conspiracy to commit the crime itself. Or failure to act on a KNOWN situation — like he called a family member told them exactly what his plans were and they didn’t bother calling the police when it could be argued that they KNEW the crime was going to be committed. Which then would mean you are prosecuting an ACCOMPLICE, and their familial relationship means NOTHING...