I get what you're alluding to, but actually the cops yelled out that they were there and for any children hiding to come out (obviously well before they'd neutralized the shooter) and the kids who responded and came out of their hiding places were shot dead because the cops were too cowardly (or busy checking their Facebook feed based on video evidence) to actually protect these innocent 5-10 year olds. I have a child in that age range and my blood starts boiling even discussing this topic.

Let us not forget that these wannabe police even arrested parents who were willing to rush into danger to protect their children. That's all they were good for on this day.