re: Would you be ok with armed national guard in your kid's school to prevent mass shootings?

We could prevent 99+% of school shootings by turning schools into prisons. Biometric scanners, magnetometers, bomb-sniffing dogs/machines, guarded fences, double-gated vestibules and etc. The issue is are will willing to bear the cost, not just in money but in liberty.

Every right has a cost, most are paid in blood either upfront or on the back end. "Rights" and privileges only exist until some amount of people within the society refuse to continue to pay.