This classic union song was written by Florence Reece in 1931 while mine owners were terrorizing coal workers in "bloody Harlan County." Florence's husband was a union leader who was targeted by the mine owners for retribution. Natlie Merchant, formerly the lead singer of 10,000 Maniacs, covered it on The House Carpenter's Daughter in 2003 and released it independently on her own label. There have also been versions of "Which Side Are you On?" by Pete Seeger, Dropkick Murphys and Billy Bragg.