This lecture delves into the critique of 'Red Vienna' by exploring the socialist policies implemented in Vienna between 1918 and 1934, focusing on the housing initiatives, the ideological principles of Austromarxism, and the debate between social democracy and Bolshevism. The instructor discusses the synthesis between social democracy and revolutionary socialism, the policy of Red Vienna, and the different types of urban interventions, such as the Siedlung and Hof types.