I just read a CNN article about a teenager who killed the principal.  www.cnn.2007/law/04/21/principal.shooting.ap/index.html.

What drew my attention was that the principal tackled the kid and put him in a bear hug.  This just made things worse.  Now, you might recall that I posted something about breaking up a fight last year.  And I suggested that grabbing someone from behind was a really bad idea.  Well, it *still* is a really bad idea.  If you absolutely must do it, be sure to immobilize the arms so this won’t happen to you.