One Big Union is a play with music about the death of Joe Hill, a Wobbly songwriter executed in 1915 by the state of Utah for a murder he may or may not have committed. Considered a martyr by organized labor, his songs envisioned gender and racial equality and criticized the gross income disparities of his time. Joe Hill remains an enigmatic folk hero but beyond the mythology lies a larger story of protest, still relevant a century after his death.