Was Marx himself a ‘Marxist’? What is ‘dialectical materialism’ or the ‘superstructure’? Did Lenin and Stalin betray Marx and his ideas? Along with Freud and Darwin, Karl Marx was among the most influential thinkers of the late 19th century. Yet Marx inspired not only revolutions in people’s minds, but colossal political upheavals, radically transforming the lives of many millions of people and the geopolitical map of the entire world.