Everytown.org reports that since the December 2012 massacre at Sandy Hook Elementary School in Newtown, Connecticut, where 20 children and six adults were shot to death, there have been at least 74 school shootings in America.
From Care2 Petition Site:
The debate about guns in the U.S. has reached fever pitch. Recent massacres, especially that which took place at Sandy Hook Elementary School, are some of the worst in American history. These events have spurred a new round of debate on how to prevent future gun violence.