The time was 49 BC. The players were Julius Caesar and the members of Rome’s Senate. Caesar had shown himself to be one of the most gifted generals in Rome’s history: In a remarkable series of campaigns starting in 58 BC and conducted over approximately eight years, Caesar turned Gaul from a hostile territory into a pacified Roman province.
Caesar’s goal was to become ruler of Rome. He was popular with the common people and often championed their interests against Rome’s powerful elites. The elites had enriched themselves by corrupting public officials to accumulate vast tracts of land at the expense of those less powerful. As a result of his military success, widespread popularity, and populist policies, it’s no surprise that the elite interests in the Senate vehemently opposed Caesar. In 49 BC the senate made its move: It ordered him to disband his army.
This left Caesar with a difficult decision: He could disband his army and return to Rome, and most likely fail in his goal, or he could march his army across the river Rubicon and take power in an open act of rebellion. The latter move would make civil war inevitable.
Caesar chose the latter course. As he crossed the Rubicon, he famously said, “Alea iacta est” (the die is cast). This move did, indeed, lead to a civil war, which Caesar eventually won. He took power, established the dictatorial Roman empire, and, in doing so, ended the republic. Ultimately, it also led to Caesar’s murder on March 15, 44 BC at the hands of his Senate enemies.
In modern usage, “crossing the Rubicon” refers to an irreversible act that commits one to a fateful course of events. This usage relies on the idea that it was Caesar’s decision to cross the Rubicon that ultimately caused the collapse of Rome’s republican form of government.
Yet, major tensions had been building in Rome for decades. One trend was political corruption: The elite increasingly used their power to pass laws that favored their interests. Another was rising economic inequality: The interests that were being favored were those that led to elite control of most of the land resources, which—in an agrarian society—resulted in the widespread loss of economic opportunity among the common people. Another was the insertion of military power into internal affairs: This became possible as soldiers increasingly shifted loyalty away from the state and onto their military commanders who, themselves, belonged to one political faction or another.
In my judgment, that sigh is premature. Perhaps Trump will be the something that pushes us over the Rubicon as he responds to the long stream of machinations by the powerful elites who are attempting to take him off the political chess board. Maybe it will be something or someone else. The point is that, whoever or whatever it is, it’s difficult to see how the toxic forces at work in this country can be stopped before some such cataclysmic event causes the system to self-destruct. That will be remembered as the crossing-the-Rubicon event. But the real pivot point was reached when the toxic forces presently in play could no longer be turned back through the normal operation of the existing institutions.