I thought it was a low blow because i felt you were saying that a woman practicing how to properly use a firearm at a training course was close to what the children felt. Firearms use to be okay at schools in some situations they still are. We have a trap team here and the JROTC has competitions with actual rifles.Did you try standing in front of one while someone was firing it?
You considered it a low blow because it doesn't suit the any-gun-any-place-any person brigade to imagine what that gun did to those kids. The more people who do, the sooner you will be free of the horrors that are being perpetrated.