I remember my younger sister taking the p. out of "We will overcome", the verse that goes "We will ban the bomb" in particular. My older sister, who was more of that generation, got a bit defensive at this point - "Well, we did ban the bomb..." It took a moment before she realised that actually, no, we didn't. Great campaign, though.

I suspect it's a fool's errand looking for Songs that Changed the World - how could we ever be sure that the song made the difference? - but I do think songs, & popular culture more generally, has wider effects. Jeff Nuttall said that the most significant thing about the first wave of CND in the early 60s was that it failed completely - thousands of idealistic kids were left revved up and with nowhere to go, but with a little extra dose of cynicism about achieving anything through 'the system'. Result: the counter-culture of the late 60s, and everything that followed from that.