This document provides an overview of Marxism and key Marxist concepts and theorists. It defines Marxism as a philosophy based on the ideas of Karl Marx that analyzes the social effects of industrial capitalism, including the division of society into two classes - the bourgeoisie and the proletariat. The document outlines how Marx and Engels argued this would lead to social inequality and exploitation of workers, and their vision that the proletariat would eventually revolt and overthrow the bourgeoisie. It also briefly discusses the contributions and perspectives on Marxism from theorists like Vere Gordon Childe, Theodor Adorno, and Slavoj Zizek.