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 night of 25–26 March 1953, in which they herded men, women and children into huts and set fire to them, hacking down with machetes anyone who attempted escape, before throwing them back into the burning huts. The attack at Lari was so extreme that "African policemen who saw the bodies of the victims were physically sick and said 'These people are animals. If I see one now I shall shoot with the greatest eagerness, and it "even shocked many Mau Mau supporters, some of whom would subsequently try to excuse the attack as 'a mistake. A retaliatory massacre was immediately