May 30

1937

Workers and families gather near Republic Steel plant for Memorial Day demonstration and picnic

1937

Chicago Police open fire on marchers without warning; ten workers killed, ninety-plus wounded

1937

Dorothy Day witnesses the police attack and later reports on the massacre

1937

Nine workers permanently disabled by police beatings

1937

Dorothy Day witnesses and documents incident

1937

Newsreel footage of shooting filmed

1937key event

discovery / report of the crime

1937

Union organizes Memorial Day demonstration and picnic

1937

Crowd of 1,500–2,500 gathers near Republic Steel plant with flags and signs

1937

Procession begins toward Republic Steel's main gate

1937

Chicago Police move to block procession

1937key event

Chicago Police open fire on crowd without warning

1937

Four workers killed at scene

1937

Over 90 workers wounded and hospitalized

1967

Memorial plaque installed near the massacre site on the thirtieth anniversary

1967

Memorial plaque dedicated at 11731 South Avenue O on 30th anniversary

2024key event

Trump convicted of all 34 felony counts of falsifying business records

2026key event

Prosecution of Donald Trump in New York