While I think this law will do jack squat in stopping mass shootings, I don't think it will make mass shootings more likely either.
In other words, this law accomplishes squat in regards to its supposed intended purpose.
It merely piles on the rest of the useless "Do Something!" laws that have been enacted.
Riddle me this: If you're on a campus, bent on murder and a high body count, what effect does this law have on you?
Answer: None. In point of fact it may actually embolden the type of cowardly scum that commit this type of crime, since they know THEY will be the only one in possession of a firearm and ammunition.
Your point is specious.
Not the point I was arguing. I don't think any active shooters show up to a school, look around and decide not to shoot up the place just because they don't see a "gun free zone" sign. I haven't seen any proof that shows a location was targeted specifically because it had a gun free zone policy or sign.
The fact is, virtually all the mass shootings have taken place where it is common knowledge that the area is a "gun free zone". They are obviously chosen because of a lack of armed opposition, allowing the perpetrator time to kill as many as possible before taking their own worthless lives once authorities finally arrive.
The proof is in the chosen killing ground. Your point is irrelevant.