I came across this concept in my Mesoamerican archaeology class a few days ago.
Leadership during these early times may have instilled a culture of fear in order to facilitate their agenda. For example, a high powered ruler may have warned of a nearby society that could be preparing to attack. Their only hope was to follow his leadership.
Civilizations have done this for a very long time.
Another concept is that this ruler was secretly in alliance with the neighboring "threat". Their working together allowed them to coordinate "raids" on each other's communities and therefore legitimize each other's threat and power.
This is daringly familiar. What if the United States Government allowed the incident to happen in order to push the neo-conservative agenda?