And it certainly does not help when you have a media that, in pursuit of it’s anti gun agenda, does not bother informing the public about key details of the mass incidents at schools. For example, the perpetrators of the Columbine tragedy rescheduled their bloody rampage to the day that the Colorado state legislature was to debate (and likely pass) legislation to allow law abiding citizens to obtain concealed carry permits for handguns. Both the young teenagers opposed this law and, IIRC, at least one of them wrote to their state legislator expressing this opposition. And that poor response time on the part of police and other emergency services greatly helped to contribute to the high death toll that took place.
And the policy to place the safety of LEOs over they safety of the civilians in danger.