Reality is Plastic: 74 School Shootings Becomes 15 (Somehow 15 is reasonable?)

ThinkProgress.com is reporting that CNN bowed to pressure from conservative commentators and re-counted the number of school shootings since the Newtown Massacre. 

Let's imagine that this was not merely a matter of politicking, but actually a gross error.

Should we be less concerned that only 15 school shootings have occurred since Newtown?

Fifteen school shootings is still too many.  That number includes 25 people killed, more than 40 injured (larger numbers traumatized).