... that dead intended shooters don't harm as many students as living ones.
... serve as a deterrent for violent crime moreso than signs advertising that everyone is totally defenseless.
Nope. You try pleading your case that rendering all people defenseless, and advertising/broadcasting such, somehow minimizes damage done by shooters, and that the reason that shootings occur so much more frequently in defenselessness zones, aka schools, than in police stations, militia drills and gun shows is because the NRA keeps ramping up their "2nd Amendment" rhetoric.
Good luck.
We'll see. Make your argument.
I'm not thankful. You haven't presented any argument ... because you don't have one. You are just another vile leftists who wants the perpetual stream of child deaths that leftists have created to continue. If you don't kill them in the womb, you are certainly going to kill them when they arrive at their compulsory target position in their designated defenselessness zone. We'll just call it your "post-birth abortion" program.