Operation Anvil (Mau Mau Uprising) the reserves. The "Grey" grade was made up of prisoners believed to be passive Mau Mau sympatherisers though for whom strong evidence suggesting their true loyalties was lacking. The last category, "Black", was reserved for detainees identified by the hooded informers or the Special Branch of the Kenya Police as potentially violent insurgents or terrorists. A few may have been prosecuted by the government, but most were funneled through the "Pipeline", a system of work camps, decreasing in brutality until an individual was "re-educated" and deemed safe to release on a native reserve. Operation Anvil (Mau Mau Uprising) Operation Anvil
Mau Mau Uprising of atrocity and excess on both sides, a dirty war from which no one emerged with much pride, and certainly no glory." Historian Daniel Goldhagen describes the campaign against the Mau Mau as an example of eliminationism, though this verdict has been fiercely criticised. The total number of deaths attributable to the Emergency has been a source of dispute: Caroline Elkins claims it is "tens of thousands, perhaps hundreds of thousands". Elkins numbers have been challenged by the British demographer John Blacker, who demonstrated in detail that her numbers were overestimated, explaining that Elkins' figure of 300,000 deaths "implies that