mass shootings occur in locations that are soft targets
my response ... what you are suggesting is unstable people have enough presence of mind to not only concoct a plan but include only "soft" targets. I will counter with the suggestion this may be pure coincidence as I suspect an unstable person does not have the mental discipline to devise a well constructed plan.
I propose a study:
1. Arm all mentally unstable folks with an appropriate attack package i.e. at your discretion of course but please include at least one semi auto rifle with extra large magazines and at least one large capacity semi automatic pistol, and of course plenty of ammo
2. Allow participants to devise heir horrendous plans and not interfere in any manner prior to the execution of said plan and then only in the ordinary manner
3. Run this study for 100 years
4. analyze data
I predict the results will show that the perpetrators will only select sites with large number of targets, irrelevant to site, gun status