Like i said kids back in the 70ies and 80ies were not any better. You just did not know about it. You know this story because of internet. If we were in the 70ies you would not know about it and would think kids are alright cause yours are.
I don't have kids yet but I will try to make sure that I treat them right and well which I hope.
Back in old days, there weren't many gun/bomb treats..... Then in 90's era and ongoing, there are shootings, bomb treats, fake fire alarm pulls which is because the kids learn from internet, DIY videos, or video games. That's why some kids aren't trained well by their parents. If the kids are trained well by parents, these tragic events would not be happening.
I have seen kids are trained with the guns at early age by their dads .... even on TV shows and shooting ranges.
Plus shockz's post is right.