From the Tiber to the Temple: The Shadow of Roman Antisemitism

History has often framed the presence of the Jewish people in Europe as an anomaly, yet their interactions with the ancient world reveal that the tensions defining their existence did not arise in a vacuum. In the marble halls and provincial outposts of Rome, the seeds of a profound geopolitical and cultural divide were sown, revealing that the “oldest hatred” began not with modern prejudice, but with the clashing priorities of imperial authority and a people determined to remain distinct.

Jews had lived in Rome for more than two centuries before the trials that would define their standing in the city arrived. Their community dates back to the second century BC, when diplomatic envoys sent by Judah Maccabi established a presence that never broke — an organized community running in uninterrupted form from the era of the Roman Republic to the present, giving Roman Jewry a claim to being one of the oldest continuous Jewish populations on earth. Roman writers regarded these residents with a mixture of curiosity and suspicion. They respected the sheer antiquity of the Jewish faith yet dismissed its customs as strange, stubborn, and misanthropic (p. 34): Perhaps the most famous anti-Jewish writings from the ancient world are those of Tacitus, who viewed Judaism as “opposed to all that is practised by other men” (The History, 5.4, 659) and reflect Jewish behavior from ancient times to the genocide in Gaza and the ethnic cleansing on the West Bank.

Among themselves they are inflexibly honest and ever ready to show compassion, though they regard the rest of mankind with all the hatred of enemies. They sit apart at meals, they sleep apart, and though, as a nation, they are singularly prone to lust, they abstain from intercourse with foreign women; among themselves nothing is unlawful.5 Circumcision was adopted by them as a mark of difference from other men. Those who come over to their religion adopt the practice, and have this lesson first instilled into them, to despise all gods, to disown their country, and set at naught parents, children, and brethren. (The History, 5.5, 659–660)6

The Romans also noted Jewish clannishness, famously Cicero’s complaint dating from 59 B.C. during the trial of Flaccus: “See how unanimously they stick together, how influential they are in politics” (Pro Flacco, 66). Juvenal complained that Jews would not show a wayfarer his road or guide the thirsty to a spring if he were not of their own faith.

That uneasy tolerance cracked in 19 CE, when Cassius Dio recorded that the emperor Tiberius banished most Jews from the capital because they were flocking “to Rome in great numbers and were changing many of the natives over to their customs.”

The expulsion carried real teeth. Roman authorities shipped roughly 4,000 young Jewish men to the malarial island of Sardinia under the pretext of military service and banished many others from Italy entirely. Ancient sources disagree on the trigger. Josephus blamed four swindlers who had defrauded a Roman noblewoman named Fulvia—wife of the senator Saturninus—out of gifts intended for the Temple in Jerusalem.

Scholarly debate centers on what Rome feared. Some historians argue the real anxiety was not hatred of Jews as a people but alarm that Judaism would spread among the political class, although evidence (Ch. 4) for significant levels of conversion is controversial and scanty. According to this reading of events, the crackdown fell hardest on converts rather than born Jews, since Rome tolerated the faith so long as its own citizens did not embrace it. Roman elites had reacted the same way to the Bacchanalian rites and to Egyptian worship, treating each foreign devotion as a contagion to be contained. Some historians add that the Sardinian expedition doubled as blunt manpower recruitment, since Rome leaned on less protected groups when it needed soldiers.

A second rupture arrived a generation later. Suetonius reported that the emperor Claudius expelled Jews from Rome because of “constant disturbances at the instigation of Chrestus”—a disputed passage whose meaning has divided scholars ever since. Many have taken “Chrestus” as a garbled reference to Christ and read the turmoil as fights over the new Christian message spreading inside the Jewish community, though H. Dixon Slingerland argued persuasively that “Chrestus” was more likely a freedman agitator and that nothing in the evidence points toward Christianity.

Cassius Dio described a related but distinct measure—an order restricting Jewish assembly rather than wholesale banishment—and the Philip Harland translations make clear that Dio explicitly denied an expulsion by Claudius, referring instead to a ban on Jewish gatherings. Rome appears to have acted out of impatience with public disorder rather than any theological program. Claudius would tolerate Jewish religion if its followers kept the peace and won no new adherents. The order likely reached only those caught up in the unrest, and it lapsed when Claudius died in 54 AD.

The administrative frictions of earlier centuries gave way to something categorically different. The Great Revolt broke out in Judaea in 66 CE after Roman governors had plundered Temple funds, stood by while Jewish civilians were massacred in Caesarea, and ground down local sensitivities until the province exploded. Rebels expelled the Roman garrison from Jerusalem and organized a provisional government. The moment of no return arrived when the Temple priests halted the daily sacrifice offered for the emperor’s welfare—the sacrificium pro salute imperatoris—a gesture Rome read as outright rejection of its sovereignty.

Nero sent Vespasian north to break the uprising in Galilee and drive the rebels back toward the capital. Inside Jerusalem the resistance collapsed inward, rival factions fighting each other as ferociously as they fought the legions. By 70 CE Vespasian had claimed the throne, leaving his son Titus to complete the siege with an army of tens of thousands. That summer the Romans forced the Temple Mount and burned the Second Temple to the ground.

What followed was systematic: combatants were killed on the spot, captured fighters were executed, those above a certain age were sold into slavery, and children were put into bondage. Scholars have long observed that the totality of the destruction also served Flavian purposes. Nothing legitimized a new dynasty like a spectacular victory and the public humiliation of a conquered people. Titus transported the Temple treasures to Rome, and the Arch of Titus in the Roman Forum still carries the carved image of his soldiers bearing the menorah in triumph.

The humiliation outlasted the war. Vespasian imposed the Fiscus Judaicus—a poll tax of two drachmas re-directed from the destroyed Temple’s own levy, now payable to the temple of Jupiter Capitolinus, the god in whose name Jerusalem had fallen. The reach of the new measure exceeded the old one, as women, children as young as three, and converts to Judaism all became liable. Under Domitian the collection grew brutal. Suetonius left a personal recollection of watching tax officials examine an old man of 90 in a crowded court to verify whether he was circumcised. The door to denunciation swung open. Informers could now accuse anyone who seemed to live as a Jew, a weapon that enabled blackmail across Rome and Italy. Rome kept the levy alive long after the Capitoline temple had been rebuilt and consecrated—proof that the tax served purposes beyond revenue, chiefly deterring conversions to a faith the state was determined to contain.

The violence of the suppression marked a genuine rupture. This was no longer bureaucratic friction with a difficult religious minority, but a state campaign aimed at destroying the institutional core of a religion that had placed itself, in Rome’s judgment, outside the imperial order. Yet the campaign carried an unintended consequence: the thousands of captives Titus sent to the Italian peninsula seeded the oldest Jewish communities the country would ever know. In Puglia, in towns like Otranto and Trani, these exiles raised synagogues and academies and turned the region’s ports into a gateway back toward the eastern Mediterranean. Their scholarship grew deep enough that the 12th century French rabbi Rabbenu Tam paraphrased Isaiah to honor them: “From Bari the Torah will come out and the word of God from Otranto.”

The settlement forged under the pagan emperors did not survive the conversion of the empire. When Constantine elevated Christianity to the favored faith in 313 CE, the legal standing of Jews across the empire began to erode, and a cascade of restrictive legislation followed. Julian briefly reversed direction, extending an invitation to Jews to rebuild their Temple, but the opening closed the moment he died. Under Byzantine and then Lombard rule the story of Italian Jewry moved between stretches of relative calm and fresh rounds of oppression.

The story of the Jewish people is characterized by a persistent, inherent tension with the surrounding Gentile world, a recurring dynamic that the Roman era proved impossible to resolve. As the Empire transitioned from the worship of Jupiter to the cross, the legal and social framework solidified, casting a long, dark shadow forward. This ancient collision was merely the prologue. It ultimately formed a foreboding chapter that would predict two millennia of escalating tensions across the European continent.