It was one of the great political ideologies of the 20th century, vying with capitalism for supremacy.\nNow communism has retreated from the political mainstream having failed to create the utopia of a classless society.\nDominic Sandbrook and Tom Holland discuss the origins of communism as a theory and the frequently repressive attempts to govern by its principles.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices