This lecture introduces Marxist perspectives on ideology and its role in media and culture. It discusses key theorists including Althusser and Gramsci. Althusser viewed ideology as structuring reality rather than being false consciousness. Gramsci developed the concept of hegemony to describe how dominant groups gain consent through the diffusion of values and beliefs throughout society that maintain the status quo. The media are discussed as playing a part in justifying oppression by legitimizing the current social order.