The levels of trust and openness that are necessary for teaching are diminished every time someone opens fire in a classroom

Sometimes a sentence just leaps out at you. It isn't that it is wrong, or insulting, or intemperate. It's just - incongruous. In a sincere essay about violence and its affect on the learning environment, Alexandra J. Ravenelle in Each Teacher Wonders, Is This the One? makes the statement:

The levels of trust and openness that are necessary for teaching are diminished every time someone opens fire in a classroom.

Well, gotta agree with that.