The true story of the "Haymarket Affair" is one we'll probably never know, but Caleb Crain does a good job chronicling the apparent facts and fiction surrounding it in his review of the historical literature. Crain's impetus is James Green's Death in Haymarket, a book that bears the pithy but evocative subtitle "A Story of Chicago, the First Labor Movement, and the Bombing That Divided Gilded Age America."