OF COURSE the MK puppetmasters would cause a teacher to go wacky with a gun. ANYTHING to keep guns from the classroom, from hallways, from schools. (((They))) want our children to be sitting ducks, to suffer PTSD, to need medication.
IF the clock just restarted,
IF the keystone is the center of the arch/clock,
THEN posts from 12/24 or 12/25 COULD be one of the meanings of a keystone.
What was posted 12/24-12/25 (that might correspond with 4/14)?
The image of Washington Crossing the Delaware, and crumbs including text of “Secured. The floor is yours. CONF_WHITE_WHITE. You are safe.”