Folk music in the CND (Campaign for Nuclear Disarmament) in the Fifties & Sixties might be a good place to start. The music certainly helped to keep the CND going. I personally believe that the CND helped to keep nations talking at a time when some politicians had itchy trigger fingers. The fact that millions of people on both sides were marching for the same cause must made these polititians have second thoughts about escalation.

Before the CND it was considered very unpatriotic to talk against war. And in most countries it was treasonable to talk against the government.

This more enlightened era that we live in has arrived SINCE the CND. How much was due to the movement and how much the songs helped are the questions.

Bert.