In numerology six has a radically different meaning from seven, which is most likely the root of this meaning. In some schools of thought six is the number of man and man’s ways, while 7 is the number for God and the divine. The point is it implies things that are diametrically opposed, much like the Ordo Ab Chao or order out of chaos slogan of the Satanic Illuminist underworld.
There’s no way an irate parent goes around shooting children, whatever cockamamie story line they come up with. I don’t care what they say. Legislation and/or executive orders banning guns are just waiting to be signed, so just watch the furor over this horrific school shooting in Connecticut get whipped into a frenzy and unilateral call for gun control.