The Taxi Rank and File Coalition’s version of the song Solidarity Forever, from the Taxi Rank and File Coalition Song Book.  If any song deserves the title of American labor’s national anthem, it is Solidarity Forever, written to the tune of John Brown’s Body with words by Industrial Workers of the World (IWW) organizer Ralph Chaplin.  It is used throughout the labor movement to mobilize support for workers’ struggles.

Image from the Taxi Rank-and File Coalition Collection, NYU Robert F. Wagner Labor Archives.