The Austromarxist era of the 1920s was a unique chapter in socialist history. Trying to carve out a road between reformism and Bolshevism, the Austromarxists embarked on an ambitious journey towards a socialist oasis in the midst of capitalism. Their showpiece, the legendary "Red Vienna," has worked as a model for socialist urban planning ever since. At the heart of the Austromarxist experiment was the conviction that a socialist revolution had to...