Hypothetical:
For whatever reason, you arrive at your kids school at the same time the police do, say the kid forgot his or her lunch and you were bringing it.... You see the police set up a perimeter, you sent them wait and wait and wait while you hear pop,pop,pop coming from the inside of the school.
Seconds, minutes tick by, the gunfire continues, the police do nothing. You also have a carbine, a plate carrier, and 210 rounds of 556 in your trunk...
What is going through your mind as pop, another child is murdered, pop, another, while police seal off the scene, doing nothing to protect your kids as they have no legal obligation to, ensuring maximum death toll....