Folk music is a multifaceted craft that covers every aspect of the human condition. One of the side roads that seems to have been abandoned over the years if the art of the protest song.
Here are a few resources to explore.
Phil Ochs: Here’s To The State Of Mississippi (1966)
Peggy Seeger: Gonna Be An Engineer (1971)
Bob Dylan A Hard Rain’s A-Gonna Fall (1962)
Peter Gabriel Biko 1988
Pete Seeger: We Shall Overcome (1967)
Tom Lehrer: The Folk Song Army (1965)
There are countless other examples. Start digging. Start writing. Start singing!