a labor rally, a bomb, and a rigged trial that gave the world may day.
means the 1886 chicago bombing and unfair prosecution that turned a workers rally for the eight hour day into a global labor martyrdom.
from named for the chicago square where hay and grain were once traded, it became the site of a may 4 1886 rally supporting striking workers when police moved to disperse the crowd and someone threw a bomb, killing an officer and setting off gunfire that left dozens dead.
august spies — editor and defendant, hanged november 11 1887
illinois pardon — governor altgeld pardoned survivors in 1893, calling trial unjust
haymarket memorial — chicago monument dedicated 2004 near original square
international workers day — may 1 chosen worldwide in memory of the rally