lol  Nice try. 
  
Nobody can defend themselves on school property.  They are at the mercy of these sick !@#$s when they come around with a couple of guns.  One armed and trained teacher prevents or lessen this tragedy.  Instead, you want to accept and promote a culture of passive, perpetual victims. You want to make more defenseless people.  More "gun-free" areas.  Awesome.  We can tell this has worked.  History tells us so.  Other cultures, incomparable to ours, tell us this has worked.  You want us to surrender our freedoms because a few !@#$s out of 300 million people decide to take advantage of our weaknesses.