Interpretations:The Communists Have The Music
While I can see how this song could be interpreted as another 1st person narrative from a fictional point of view, I'm going to argue that, when Linnell sings "what I care about is music," he's singing from the heart. The lyrics are not a political argument or diatribe; they are an acknowledgement that the music of communism really is great, especially compared to fascism or egoism (the philosophy of Ayn Rand). Admittedly, I'd love to hear John and John openly support communist ideas like worker co-ops, free access to health care and education, etc., but I don't think that's what they're doing here. They're celebrating the music of communism and having a great time doing it.
I also REALLY don't think it's some kind of satire poking fun at communists or at people who choose their political ideology based on music. There's just way too much positivity and enthusiasm in this recording to imagine it as a mean-spirited joke. (Zeppyfish, 9/15/18, 9:57 pm PDT)