You're right. The original lyrics are hilarious! I've heard another soft-version of this song in the 'verbenas' (verbena ≈ party). That soft-version hasn't Zapatist propaganda and has changed some verses like 'marihuana que fumar' → 'una patita de atrás' (!)
I just want to say, though I've heard the tune for years I never knew the lyrics. This is one bizarre, hilarious song, and the fact that Verse 6 mentions Albuquerque makes it even better. Granted, my Spanish is muy terrible but I liked the parts I could figure out.