In my 13 years of operating a digital radio station, I got requests from music artists to put their music in rotation. Some of them quite good actually, some not so much. Here ar some of the tracks sent to me over the years giving my permission to share. I make no copyright claims to the content.
An archive of some of the podcasts from the news talk podcast New Abolitionists Radio which was started in 2013 to bring awareness to the issue with the 13th Amendment of the US Constitution which in fact does not entirely abolish the institution of slavery. The podcast had several cohosts.