The document discusses the history of class conflict and class struggles throughout history. It describes how in ancient times such as Greece and Rome, the majority of people were slaves and society was divided between slave owners who made up the leisure class, and slaves. During feudalism in Europe, society was hierarchical with free peasants at the bottom and monarchs and the pope at the top, with lords and bishops in between. The Industrial Revolution led to the rise of the bourgeoisie and a new working class, causing conflicts between these new classes.