Done deal. It was taught back in the old days that the prerequisites were...
A: Economic instability, and B: An uneducated public who had somehow come to believe that it was better to stay that way. Then all that was necessary was a leader who proposed "order", "national security", and the assurance that ones own culture and Way of Life was superior to others, often coupled with foreign invasion to underline the point and increase the power of the military. Or of course a leader (or dynasty) that was stupid and vain enough that the High Priests could do their skulduggery while the King gave aimless speeches and otherwise polished his ego.
Of course G.W. Bush fits the mold perfectly, and it was under his reign that the horror truly blossomed. But the seeds were planted by 'Man of the Century', Ronald Reagan. Man of the century, indeed. But for all the wrong reasons. It could be said that the fall began even before that, with Nixon's paranoid duplicity, or perhaps exactly to that fateful day of November 22, 1963. The spate of assassinations and violent events that followed, the daily horror of wrongful war brought into our living-rooms, the birth of the drug culture. All these horrific things came to us at once, and only through their constant repetition did we slowly become convinced that such things and events could be and finally were part of what could be called "normal".
In any event, I think it is fair to say that we are now experiencing as a society is the painful choice between awareness (including of the damage we have done to ourselves and others) and recovery, or the continuance of denial -- and the slow death of real individual freedom except as claimed by a powerful elite.