I love protest songs, of all kinds, all eras, all genres, pretty much all the time. Like many here, I'm particularly fond of protest songs from the 60s & 70s; I'm such a folkie, it's embarrassing. I have no expertise but lots of enthusiasm, and I so hope you'd contribute some of your knowledge and experiences of the songs. First, what is a protest song? Phil Ochs has the best definition of them all. Please see below.
Put on your fighting clothes.
Saturday December 18, 1915
From the Chicago Day Book: Thousands of Striking Garment Workers Win Shorter Hours
The Day Book of Chicago, Illinois, reported in its December 16th edition that, although recognition of the Amalgamated Clothing Workers of America has not been granted, nevertheless, thousands of Garment Workers have won the 48-hour week with no reduction in wages: