Here is a quote from the new book "CONTROL" by Glenn Beck (who actually did painstaking research on the issue):
"Five thousand years of recorded history. Five hundred years of gunpowder combat. One hundred fifty years of repeating firearms. Yet, despite it all, no one can find a single case, anywhere in the world, where a juvenile committed a multiple homicide in a school prior to 1975. Common sense tells us that maybe this isn't about the gun after all."
No, it's not about guns. It's about liberals who want more control over the masses, and want to make sure we cannot resist.
As to the "why" of recent incidents involving children with guns in school, perhaps we should look at Glenn's quote once more. 5000 years and yet the first school shooting by a juvenile did not occur until 1975. Does that ring a bell?
It seems that these incidents began shortly after America took a sharp left turn in the 1960's. Hippies, drugs, but most notably the (then liberal) United States Supreme Court made two decisions that virtually guaranteed our society would decline - Roe vs Wade and kicking God out of schools and public view.
Every child since then has grown up in a culture where there is no sanctity of life - it was only luck that his or her mother allowed him or her to be born. And without public support of religion and religious ethics, those same children have no moral anchor. And hardly a day has gone by since those decisions when our children are not faced with public debate on abortion, making it even more likely that some of those children will place no value on human life.
And when a child places no value on human life, and fears no God, it's only a matter of time...