The fear of terrorism in our schools and athletic events can increase still more the tendency to grasp at every straw for security. The NRA wants an armed guard in the classrooms as a solution.
I think we already have the full quota of security measures and anything added to it would lead to diminishing returns. It would be wasted because no amount of money spent on surveillance (Washington Post said telephone conversations and e-mails are already recorded and monitored) would not increase the chances of preventing terrorism.
We must face the fact that not all acts of terrorism can be prevented, and that they have always been part of human history. This is sad, but unavoidable unless we all as a species engage in a religious revival.
Remember also that some of the terrorists connected with al-Qaida consider themselves "freedom fighters" and that in our own nation's history, although we meant well, we are not totally free of acts of torture and terrorism either.