The document discusses Karl Marx's contributions to philosophy, particularly his development of Marxism, which critiques capitalism and class struggles between the bourgeoisie and proletariat. It also touches upon other influential thinkers like Stuart Hall, Antonio Gramsci, Louis Althusser, Laura Mulvey, David Gauntlett, and Noam Chomsky, who expand on or critique Marxist theory through various lenses, including culture, media, and societal dynamics. The document highlights the evolution of Marxist thought into neo-Marxism and explores themes of hegemony, capitalism, and the impact of media on class relations.