The US fought a bloody tribal civil war, we learned from the stupid futility of it.

There is no excuse for tribal war. Anytime you have a situation where one group of people who number as a bulk amongst them neighbors who live in huts, are off killing other people who also live in huts, something is desperately flawed with their cultural ethos.

Fighting over so little is stupid, and only ensure that there will be little to fight over.

One of the hardest aspects of cultural evolution is coming to the realization when confronted with another way of doing things that works better, that changing could be better. It involves discarding a lot of witless pride, foolish beliefs, and unsupportable biases in the face of new information.

Not easy to do. But Africa, and all the nations and tribes within it need to get a clue and realize that the path to individual success does not begin, end, or contain the use of weapons against their neighbors, or the toleration of seeking behavior which uses these as its primary tools.

And it should be obvious, when they are justifying killing in circumstance other than defense, with religion, that the speakers are evil despoilers of anything truly divine.

Anwer,
This is not simply a tribal luo-kikuyu problem as you and others in the media have chosen to characterize.
Yes, the clashes have taken a tribal turn with Kikuyus being chased out of Rift Valley Province, Nyanza province, Western province and some coastal areas. Even then, majority of kikuyu deaths have occured in the Kalenjin heartland and not Luo Nyanza. Indeed majority of the deaths in Luo nyanza have been due to gunshot wounds from security forces and not tribal clashes.
It is a rejection by a majority of the country of rule by a few: in this case a small coterie surrounding Kibaki.
To simplify it as a just a luo kikuyu tribal war is symptomatic of the lazy journalism on anything African that seeks to reduce any story to primitive, tribal, exotic happenings in "that dark continent".