While I might catch flak for this, what is indeed happening is that these PC people are realizing that gun/violence free zones dont work. By saying that teachers should fight back, they are admitting that the only way to fight evil and violence, is with an equal force. Them moving in this direction can possibly lead to armed teachers, which is the ideal.
I told the new me,
"Meet me at the bus station and hold a sign that reads: 'Today is the first day of the rest of your life.'"
But the old me met me with a sign that read: "Welcome back."
Who you are is not a function of where you are. -Off Minor