I don't give a shit about those officers. Once they knew this monster was murdering children, they should have forced entry and be prepared to die. It's been reported that some parents tried but were taken down by the cops. We'll see if that's true.
They could have forced entry at two points simultaneously, the window and the door, thereby confusing and distracting the shooter.
Maybe more children would have lived, and would not have bled out pleading, waiting for help that never came.
Have you decided to not watch the multiple posted videos of such parents being: Taken down to the ground, peppered sprayed and handcuffed?