The term 'state and revolution' refers to the Marxist theory articulated by Vladimir Lenin, which examines the relationship between the state and the revolutionary process. It emphasizes the idea that the state is an instrument of class oppression, serving the interests of the ruling class, and argues that a proletarian revolution is necessary to dismantle the existing state structure and establish a dictatorship of the proletariat. This concept is critical in understanding how Lenin's ideas influenced the Bolshevik Revolution and subsequent developments in the Soviet Union.