I look forward to seeing that evidence.
62 mass shootings over the past 30+ years, and not one location was chosen because it banned guns.
Wait... so every mass shooter over that time was interviewed after the fact and affirmatively said "Yeah, I didn't pick the school/mall/theater/etc because it was a gun free zone"? No? Then I call bullshit on your unsubstantiated claim.
These shooters aren't choosing locations based on whether guns are or aren't allowed.
We are still waiting for evidence of that from you.
Most are choosing locations because it's where they got pissed off, such as 20 workplace shootings.
'Most'... not... 'all'? Again, you fail with useful citations.
Remember the Aurora shooting? Funny thing, the shooter didn't decide to go shooting up his nearest theater, nor the second nearest nor even the third... he chose one which apparently 100% unrelated to you... prohibited guns. But that's just a coincidence... right?
Even at the schools where shootings occurred, only in 1 of the 12 school incidents did the shoot not have personal ties to the school.
So you again grasp for straws to try to argue against reality, I feel sorry for you.
Also let's consider that most of these shootings weren't just rampages, but Murder-Suicides.
These shooters were not people picking locations based on their chance of survival or retaliation.
You claim that... but again, reality doesn't well work for you.
It's quite rare that the shooter realizes they have one bullet left or killed everyone they wanted and decide to off themselves just for the heck of it... more often than not they only off themselves with faced with resistance, be it the swat team, a cop or an armed citizen.
The upshot of a gun freezone which you are conveniently ignoring for them is that they will likely have a longer period of time to carry out their rampage prior to the suicide part and fail to acknowledge that that may just come into the plans of the perpetrator.
Some reading so that you might become better informed:
Those of us who have looked into this issue do not give much credence to a political piece from a partisan site, instead academic studies on the subject are far more revealing, you really should read up on the work of John Lott... or offer a similarly well researched pieces.