THE PYRAMID CAPSTONE

The pyramid with the capstone detached has several meanings.  

One meaning would be the symbol of an unfinished project (i.e. the Great Work of Ages a.k.a the New World Order) which is very near completion.  A similar theme is carried in the classic depiction of the Tower of Babel.  An image which has the same feeling as the classic pyramid seen on the One Dollar Bill.

A second meaning would be the symbol of the elite or gods (as they see themselves) at the top of a compartmentalised system/civilisation.  The pyramid being a monument built by slaves (allegedly).  The elite get to stand at the very top and at their vantage point they get to see all, hence the All Seeing Eye in the capstone.