First part yes you are right. And many people are very calm during mass shootings, and cops never react on emotion < sarcasm.
Not saying it can not go right. I am saying if people get shot in back yards ( their own), with their hands up, with their hands up laying down on the ground. is sign that the police might no be think first ask questions later state of mind all the time.
And yes people could give directions. But mass shootings most of the time are very confusing. Very panic mode.
So your reaction is: Fight guns with guns?
There is a hole in the wall that causes water poring in, so lets cut a other hole to drain it. ( instead of fixing the hole, looking where the water is coming from etc).
Yes the seek out easy prey. But sometimes they shoot out of hotel windows. Your give a gun to stop shooting means everyone in america needs to carry a gun EVERYwhere.
I am saying its better to limit the guns more to people who can handle them. It will not stop mass shootings but it will lower them. Adding more laws and restrictions can lower the amount of death.
Because its ( sarcastically) funny that you do not mention that most of the shooters from the last few years got a shit ton of guns in a short time. Sometimes they should not even get the guns legal in that amount of time.
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1.) yes they would need to know. But are police capable of thinking like that. Look at the the cop killings etc from last few years.
2.) Not yet. And if teachers need to do it. why not all people?
Because yes we might lower gun shootings in schools. But then it will move to parks, playgrounds, cinema's etc etc etc.
Its a fix that will lower it slightly ( witch is a good thing do not get me wrong see below why). But it will not fix the general problem.
A small fix i must agree with you is still a help.
And i do not think there is a 100% fix for this. And every % is a % that its lower.