I suspect that anyone of a certain age with a history in the communist movement has sung this song (to the tune of "The Battle Hymn of the Republic") at some time. A bit of Googling suggests that it exists in many variants. I was interested in the line "We'll turn the House of Commons into a public lavatory," wondering why it wasn't the House of Lords, but I didn't find any versions targeting the upper house. Does anyone know who first wrote the words to this song?