His writings have mostly been about various types of violent conflicts and the possibilities of resolving them by restructuring failing socioeconomic, cultural, and political systems.
His first book, "Rebels in Eden: Mass Violence in the United States," (Little Brown, 1970) was an attempt to understand the racial uprisings of the sixties in the context of the history of struggles for group autonomy in America.
This was followed by "Left Turn: Origins of the Next American Revolution," (Little Brown, 1973), an interpretation of U.S. politics in light of America's "three class" social system.
"Aristotle's Children" (Harcourt, 2003), is the story of how the medieval Catholic Church allowed its thinking to be transformed by the great debate over Aristotelian philosophy.
Rubenstein's blog, www.rich-rubenstein.com, contains material about conflict analysis and resolution generally and articles written for online journals such as CounterPunch and Transcend Media Service.