Mau Mau Uprising given rise to three native Kenyan political blocks: "conservative", "moderate nationalist" and "militant nationalist". It has also been argued that Mau Mau was not explicitly national, either intellectually or operationally. Bruce Berman argues that, "While Mau Mau was clearly not a tribal atavism seeking a return to the past, the answer to the question of 'was it nationalism?' must be yes and no." As the Mau Mau rebellion wore on, the violence forced the spectrum of opinion within the Kikuyu, Embu and Meru to polarise and harden into the two distinct camps of loyalist and Mau Mau. This neat division
Mau Mau Uprising them "protected villages", purportedly to be built along "the same lines as the villages in the North of England", though the term was actually a "euphemism[] for the fact that hundreds of thousands of civilians were corralled, often against their will, into settlements behind barbed-wire fences and watch towers." While some of these villages were to protect loyalist Kikuyu, "most were little more than concentration camps to punish Mau Mau sympathizers." The villagisation programme was the "coup de grâce" for Mau Mau. By the end of the following summer, Lieutenant General Lathbury no longer needed Lincoln bombers for raids because