Before the white man came? War

We've deluded ourselves into believing in the myth of the noble and peaceful primitive
Nicholas Wade's Before The Dawn is one of those books full of eye-catching details. For example, did you know the Inuit have the largest brains of any modern humans? Something to do with the cold climate. Presumably, if this global warming hooey ever takes off, their brains will be shrinking with the ice caps.
But the passage that really stopped me short was this:
"Both Keeley and LeBlanc believe that for a variety of reasons anthropologists and their fellow archaeologists have seriously underreported the prevalence of warfare among primitive societies. . . . 'I realized that archaeologists of the postwar period had artificially "pacified the past" and shared a pervasive bias against the possibility of prehistoric warfare,' says Keeley."

http://www.macleans.ca/culture/books/article.jsp?content=20060724_130456_130456