Re: A gun is involved in every single mass shooting.
@EveryTime - "Or simply run a truck into a crowd of people. Or poisoned them. Or blown up a truck of ANFO next to the building.
The exact weapon or method is almost incidental to the act."
But with those alternatives available, this guy chose a gun. Maybe he chose it for its many advantages: easier to target than a truck in an office environment, easier to administer than deadly poisons, no need to build it yourself, unlike a bomb. It almost seems that having purpose-made devices for accurately shooting lumps of metal to kill people readily available makes it more likely that they are used in mass shootings. Who would have guessed?