Meh, happens more than you think, and not to just Americans.
The Al Qaeda groups view all AMericans as "Spreaders of Christianity", and will do what they can to prevent that "spreading". The kill Monks, Preachers, etc.
Personally, school oir not, I would not be caust there, or I would be armed. When yuo are surrounded by hostiles, and dpo not have the means to protect ones self, this happens.