Places where you should assume that a gunman wants to kill as many people as possible, rather than have some demands met and leave:
Schools.
Church, other place of worship.
Train, plane, bus.
Workplace, especially former workplace.
Theater.
Sporting event.
Mall.
That doesn’t mean, my friends in New Jersey, that someone carrying a gun in those places is a gunman. A gunman is shooting or threatening to do so.
But, but we’ve been assured by our “betters” that all we have to do in such a situation is say “I feel your pain” and sing Kumbaya, and all is well.