N.R.A. (normal rational analysis)
Parents who have weapons must control the use of those weapons, or face allegations of civil gross negligence judgement or penal gross negligence or recklessness charges.
Someone must be accountable. Shouldn’t the owner of the weapon have some responsibility for its use?
As I recall, in the event of school vandalism the parents of the child caught vandalizing must pay for damage done to school property.