The Threat is Real, very real.

[Double Naught Spy]

what happened yesterday should be used as a reason we need our 2a rights

Well, lots of people in Nevada with guns. They didn't stop the shooting. How come? None of the visitors to the hotel grabbed their guns and ran to the 32nd floor and kicked in the door and engaged the shooter. Local residents didn't retrieve rifles from their vehicles, load them, and engage the shooter. Residents didn't fire at the shooter from their homes. The shooter was not engaged by people from other hotels or buildings in the area, parking garages, etc.

I can't think of any venue such as a concert that is going to allow guns and I don't see Jimmy or Janie concealed carry whipping out their Kel-Tec P32 or Glock 27 and firing 350 yards up 32 floors at a hotel to engage the shooter without any sort of real risk of killing non-combatants on other floors. If anything, this sounds like one of the worst sort of examples to claim this is why we need our 2a rights. We do need more of them, no doubt, but nothing would have changed in this situation. Plenty of folks already have guns in NV and in Las Vegas, so a change in our rights would not have changed this situation. If what happened yesterday should be used as a reason why we need our 2a rights (bearing in mind the SC court has ruled they are not absolute already), please explain how yesterday would have been changed if they were in place.

While on the notion of reality of urban combatics, let's also keep in mind that the vast majority of people with permits to carry don't carry on a regular basis, or people who have the right to carry in permitless states don't carry despite not requiring a permit to do so. Far too many people who already can carry simply do not do so, be it a pistol on their person or a long gun in their vehicle (and in some cases, long guns in public). This goes way beyond just more of our 2nd amendment rights, but full scale attitude changes in people about taking an active role in their personal security and the security of others, which if you screw up, can subject you to significant civil and potentially criminal ramifications in most states.