How Long Has Humanity Been at War with Itself?

I would like to point MindBlog readers to an article by Deborah Barsky with the title of this post. The following clip provides relevant links to the Human Bridges project of the Independent Media Institute. 

Deborah Barsky is a writing fellow for theHuman Bridgesproject of the Independent Media Institute, a researcher at theCatalan Institute of Human Paleoecology and Social Evolution, and an associate professor at the Rovira i Virgili University in Tarragona, Spain, with the Open University of Catalonia (UOC). She is the author ofHuman Prehistory: Exploring the Past to Understand the Future(Cambridge University Press, 2022).