Expense. I'm sure you gasp and say "how can you spare any expense to protect out children?" Assets are finite and must be allocated among a number of things that call for infinite expense to assuage consciences and make people feel good.Loading it all to one end that can be much more cheaply provided by more sure and non statist methods. It is called concealed carry. It only requires that the potential murderer maniac know that he does not know hoe many or, most importantly, which adults on the premises are armed. Perhaps none are but so long as the possibility exists the maniac will not do his thing at that place.
If people are not willing to foot the expense of protecting their children with adequate measure, then I’m not going to bother feeling sorry for them when they lose them.
Concealed carry is fine, but it does not go far enough.
I’m not willing to assume that a mass murderer of children is going to rationalize that since he doesn’t know who may or may not have a gun that he best not go, I want to know that when that shooter shows up to do the deed, he will be ****ing dead.