Mau Mau Uprising arable and grazing land. During the Emergency, "screening" was the term used by colonial authorities to mean the interrogation of a Mau Mau suspect. The alleged member or sympathiser of Mau Mau would be interrogated in order to obtain an admission of guilt—specifically, a confession that they had taken the Mau Mau oath—as well as for intelligence. Mau Mau Uprising The Mau Mau Uprising (1952–1964), also known as the Mau Mau Rebellion, the Kenya Emergency, and the Mau Mau Revolt, was a war in the British Kenya Colony (1920–1963). The definition of the term "Mau Mau" has been contentious. The
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.