Mau Mau Uprising Kikuyu landholdings and forged ties with the colonial administration, leading to an economic rift within the Kikuyu. Mau Mau were the militant wing of a growing clamour for political representation and freedom in Kenya. The first attempt to form a countrywide political party begun on 1 October 1944. This fledgling organisation was called the Kenya African Study Union with Harry Thuku as its inaugural chairman. He soon resigned his chairmanship. There is dispute over Thuku's reason for leaving KASU: Bethwell Ogot states that Thuku "found the responsibility too heavy"; David Anderson states that "he walked out in disgust" as the
Mau Mau Uprising relocated. Between 320,000-450,000 of them were moved into concentration camps. Most of the remainder – more than a million – were held in "enclosed villages". Although some were Mau Mau guerrillas, most were victims of collective punishment that colonial authorities imposed on large areas of the country. Hundreds of thousands suffered beatings and sexual assaults during "screenings" intended to extract information about the Mau Mau threat. Later, prisoners suffered even worse mistreatment in an attempt to force them to renounce their allegiance to the insurgency and to obey commands. Significant numbers were murdered. Prisoners were questioned with the help of