The decision by the ruling elites in ancient Rome--dominated by a bloated military and a corrupt oligarchy, much like the United States--to strangle the vain and idiotic Emperor Commodus in his bath in the year 192 did not halt the growing chaos and precipitous decline of the Roman Empire. Commodus, like a number of late-Roman emperors, and like Trump, was incompetent and consumed by his own vanity. He commissioned innumerable statues of himself as Hercules and had little interest in governance. He used his position as head of state to make himself the star of his own ongoing public show. He fought victoriously as a gladiator in the arena in fixed bouts. Power for Commodus, as it is for Trump, was primarily about catering to his bottomless narcissism. He sold public offices to the ancient equivalents of Betsy DeVos and Steven Mnuchin. Commodus was replaced by the reformer Pertinax, the Bernie Sanders of his day, who attempted in vain to curb the power of the Praetorian Guards, the ancient version of the military-industrial complex. The Praetorian Guards assassinated Pertinax three months after he became emperor. The Guards then auctioned off his position to the highest bidder. The next emperor, Didius Julianus, lasted sixty-six days. There would be five emperors in AD 193, the year after the assassination of Commodus. Trump and our decaying empire have ominous historical precedents.