I doubt any such incident will effect Texas. After all, the very first “mass shooting” of the modern ilk took place at the U. of Texas (Austin), and is colloquially known as the “Texas Tower” incident.
There was even a movie about it, which substituted the Louisiana state capitol building for the actual U of T tower.
You don’t hear about it, because the way it happened doesn’t fit the lefty script. After the nutcase opened fire from the tower, U. of Texas faculty and students retrieved firearms from their vehicles and SHOT BACK, forcing the “active shooter” to keep down and only shoot from drainage ports on the walled parapet. Civilian fire was kept up until the police could enter the tower and terminate the perp.
Note that all the writeups I can find online either do not mention the civilian response (Wikipedia) or drastically minimize its effectiveness.
If you want you can go 'fix' wikipedia ... anyone can edit it ...
Yep. That was back in the day when most of the pickup trucks in Austin had gun racks in the rear windows, and most of them actually did carry a .22 rifle, and the owners knew how to use them.