America is different.
The US has accepted massacres as a price willingly paid for it's lack of gun control. There are an average of 20 mass shootings a year.
The gun folks would have us believe that guns prevent this sort of thing. That is so ridiculous that no one but themselves would possibly believe it, and I don't think they care. There are so many people who feel inadequate, and need a gun to sense themselves as effective human beings.