You have a point, but the wounds of a massacre are still so raw they require, sometimes, a greater show of force so that the word gets out that these kids at this school willl never be sitting ducks again.
If the deputy with the AR gets picked off, there will doubtless be another armed layer inside the school.
Its a ruse to get everyone freaked out over AR 15s and disarm us with the freak out
I had some butthead slip a submachine gun in my ear at Leorandi Da Vinci airport in the early 80s while sipping a cup of cappuccino
My first thought was not “my don’t I feel all protected?”
I thought jeez what a police state. (they was worried about terrorists at the time) Police state will get the same reaction here.