If your grandparents weren’t willing to toss the constitution overboard, you shouldn’t either.
http://en.wikipedia.org/wiki/List_of_rampage_killers#School_massacres
Its a dangerous world and always has been. Cope with it.
Grandma an Grandpa weren’t willing to let the US Mail cars on the railroads get robbed. The USMC rode the trains till the robberies stopped.