It is not just folk music that has an appreciable political component.
During the Vietnam war there was a significant antiwar sentiment in popular music
Buffalo Springfield "for what it's worth"
The Animals "We've gotta get out of this place"
Barry McGuire "Eve of Destruction"
The Doors "Unknown soldier"
Steppenwolf "Draft Resistor"
I will just leave it at that. The UK had no official presence in Vietnam
so I make no comment on the war, other than it occurred with a lasting legacy of killed injured and traumatised (like any war)