Mau Mau Uprising perpetrated by Kenyan security forces who were partially overseen by British commanders. Official estimates place the death toll from the first Lari massacre at 74, and the second at 150, though neither of these figures account for those who 'disappeared'. Whatever the actual number of victims, "[t]he grim truth was that, for every person who died in Lari's first massacre, at least two more were killed in retaliation in the second." Aside from the Lari massacres, Kikuyu were also tortured, mutilated and murdered by Mau Mau on many other occasions. Mau Mau racked up 1,819 murders of their fellow native
Operation Anvil (Mau Mau Uprising) Mau" movement, had proliferated the Kikuyuland region. On 20 October the colonial governor declared a state of emergency, initiating efforts by the British military to put down the insurgency. The first months of the British campaign were plagued by a lack of discipline, communication, coherent strategy, and useful intelligence and little progress was made against the Mau Mau. An assault on the Naivasha police station and a massacre of civilians in the village of Lari in March 1953 dramatically escalated the conflict. Mau Mau activity also began to surface in the city of Nairobi, which had a large Kikuyu population.