At a Glance
A Stranger on the Islands
John Okello was not from Zanzibar. He was born in 1937 in the Lango region of Uganda, the son of a subsistence farming family with no connection to the islands, to the Swahili world of the Indian Ocean coast, or to the political fault lines that were slowly fracturing Zanzibari society. He was, in the most literal sense, an outsider — and the revolution he came to lead was, in part, a product of the outsider's capacity to see what the insider has learned not to notice.
He arrived in Zanzibar in the late 1950s as part of the movement of mainland African labour that the islands' economy had drawn for generations. He worked initially as a bricklayer and a painter, living in the poorer African quarters of Zanzibar Town, moving between the city and the rural parts of Unguja island as work required. He was observant, restless, and deeply religious — a Seventh-day Adventist who interpreted his personal mission in explicitly messianic terms and who recorded his visions and dreams with the same seriousness he brought to military planning.
What he saw in Zanzibar was a society arranged in a hierarchy of race and class that was maintained as much by habit and deference as by force. The Arab sultanate, the British Protectorate behind it, the African majority below both: it was a structure that seemed, to most observers, stable. Okello looked at it and saw its weakness. He also, apparently, decided that he was the instrument through which that weakness would be exploited.
Building a Secret Army
Between approximately 1961 and late 1963, John Okello organised and drilled a clandestine armed force drawn primarily from the African migrant workers of Zanzibar and from the rural African communities of Pemba and Unguja. He operated largely outside the formal structures of both the Afro-Shirazi Party and the Umma Party — though he maintained contact with elements of both — and the full extent of his network was not known even to the ASP leadership at the time the revolution was launched.
His methods were unorthodox. He had no formal military training and no weapons worth mentioning at the outset. He trained his recruits in the bush with wooden rifles and farm implements. He drilled discipline and timing, relying on the element of surprise and on numerical advantage to compensate for the absence of conventional military equipment. His planning was centred on a single decisive objective: the seizure of the central police armoury, which would convert his largely unarmed force into an armed one within hours of the operation beginning.
The planning was, by the standards of improvised revolutionary action, meticulous. He identified the key installations — the armoury, the radio station, the prison, the government buildings — and assigned separate units to each. He set the date: the night of 11–12 January 1964. He kept the plan sufficiently compartmentalised that even those who knew an uprising was coming did not know exactly when. And he was prepared, if the operation failed, for the consequences of failure to fall on him personally.
"I am Field Marshal John Okello. I have defeated your government. Lay down your arms or face the consequences."
— John Okello, broadcast on Zanzibar Radio, 12 January 1964
The Night of the Revolution
Shortly after midnight on 12 January 1964, Okello's force moved. The central police armoury at Ziwani fell within the first hour. Armed with the weapons they had seized, the insurgents spread rapidly through Zanzibar Town and across the island. The Sultan's small and poorly prepared security forces offered scattered resistance but no coherent defence. By dawn, the capital was in revolutionary hands. By mid-morning, the 250-year-old Busaidi sultanate — one of the oldest surviving Arab dynasties in East Africa — had ceased to exist.
Okello went to the radio station and broadcast the revolution to the world himself. His announcements were extraordinary documents: part military communiqué, part religious proclamation, part stream of consciousness. He declared himself "Field Marshal" — a rank he had awarded himself. He listed the government installations that had fallen. He warned the Arab and Asian populations of Zanzibar in terms that were explicit and menacing. He spoke of divine mission. He spoke of blood. He was, in those hours, the revolution's only voice, its self-appointed prophet and commander simultaneously.
The violence that accompanied and followed the revolution was considerable. Estimates of the death toll range widely, from a few hundred to several thousand. Arab families were killed, expelled, or stripped of their property. The social order of the old Zanzibar was dismantled with a speed that the more measured politicians of the ASP and the Umma Party had not anticipated and could not immediately control. Okello's role in that violence — how much he directed it, how much he was carried along by it — remains disputed.
Key Dates
Expulsion and Erasure
The Revolutionary Council that took power in the days after the uprising was dominated by the Afro-Shirazi Party leadership, with Abeid Karume at its head. These were men who had not led the armed operation — who had, in some cases, known it was planned without knowing exactly when or how — and who now found themselves in charge of a state whose creation they had not entirely controlled. Okello was an inconvenience: too charismatic, too unpredictable, too independent of the party structures that Karume intended to make the instruments of his rule.
The decision to expel him was taken with remarkable speed. Within weeks of the revolution, Okello was removed from the Revolutionary Council, stripped of his self-appointed military rank, and told to leave the islands. He complied. The man who had done more than anyone to make the Zanzibar Revolution happen was, by February 1964, a former revolutionary — stateless, without portfolio, and officially irrelevant to the government he had brought into existence.
He spent the following years moving between Uganda, Kenya, and other parts of East Africa, attempting to translate his revolutionary credentials into political capital and failing consistently. Uganda under Obote had no use for him. Kenya under Kenyatta had even less. He published a memoir in 1967 — Revolution in Zanzibar — that recorded his account of events in vivid and sometimes surreal detail. It was not enough to restore the prominence he had briefly held.
A Revolutionary Used and Discarded
John Okello died in approximately 1971, in circumstances that have never been fully clarified. He was in his early thirties. He had led one of the most complete and rapid revolutions in post-colonial African history and had been expelled from it before the ink on the new government's proclamations was dry.
His story raises questions that the Zanzibar Revolution's official historiography has preferred not to examine too closely. What legitimacy did the revolution derive from an armed operation led by a non-Zanzibari whose presence on the islands was itself the product of the economic conditions the revolution claimed to be overturning? How much of the violence of January 1964 was the revolution and how much was Okello — and where, exactly, does the line between the two run? His messianic self-presentation made it easy for the ASP leadership to dismiss him as unstable once his usefulness was exhausted.
What cannot be dismissed is the operational fact: without John Okello's planning, his recruiting, his timing, and his willingness to personally lead the assault on the armoury, the Zanzibar Revolution does not happen on the night of 11–12 January 1964. Whether it happens at all, or in what form, is a counterfactual the islands' political leaders preferred not to contemplate once they were safely in power. Okello was the revolution's blunt instrument — sharp enough to cut through a sultanate, discarded once the cutting was done.
Related Profiles — Tanzania
