In short
Italian immigrant anarchists Nicola Sacco and Bartolomeo Vanzetti were arrested in 1920 and executed in 1927 for a Massachusetts payroll robbery and murder they likely didn't commit. The case became a flashpoint for American anxiety about immigration, radicalism, and whether the justice system could fairly try political outsiders.
How it unfolded.
The five-minute version
What actually happened.
Nicola Sacco and Bartolomeo Vanzetti were Italian immigrants and anarchists, controversially accused of murdering Alessandro Berardelli and Frederick Parmenter, a guard and a paymaster, during the April 15, 1920, armed robbery of the Slater and Morrill Shoe Company in Braintree, Massachusetts, United States. Seven years later, they were executed in the electric chair at Charlestown State Prison. Most historians consider their conviction unfair due to prejudice against immigrants and radicals.
As it was happening
13 voices, 2686 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Slater and Morrill payroll robbery
Armed robbers steal $15,776 from a shoe company payroll in South Braintree, Massachusetts, killing guard Alessandro Berardelli and paymaster Frederick Parmenter.
Voices from this moment (1)
Slater and Morrill payroll robbery
Apr 15
“Armed robbers steal $15,776 from a shoe company payroll in…”
As it was happening
13 voices, 2686 days.
Day 0 · April 15, 1920
Slater and Morrill payroll robbery
Armed robbers steal $15,776 from a shoe company payroll in South Braintree, Massachusetts, killing guard Alessandro Berardelli and paymaster Frederick Parmenter.
“Armed robbers steal $15,776 from a shoe company payroll in…”
- Slater and Morrill payroll robbery, Apr 15
Day 20 · May 5, 1920
Sacco and Vanzetti arrested
Police arrest Italian immigrants Nicola Sacco and Bartolomeo Vanzetti, both anarchists, in connection with the robbery and murders.
“Police arrest Italian immigrants Nicola Sacco and…”
- Sacco and Vanzetti arrested, May 5
Day 359 · April 9, 1921
Sentencing
Judge Thayer sentences Sacco and Vanzetti to death. Their defense team immediately begins appeals.
“Judge Thayer sentences Sacco and Vanzetti to death.”
- Sentencing, Apr 9
Day 411 · May 31, 1921
Trial begins
The trial opens in Norfolk County Courthouse with Judge Webster Thayer presiding. Ballistics evidence is contested; prosecution claims a gun recovered from Sacco fired the fatal bullet.
“The trial opens in Norfolk County Courthouse with Judge…”
- Trial begins, May 31
Day 455 · July 14, 1921
Jury verdict
After six weeks of testimony, the jury finds both men guilty of murder in the first degree.
“After six weeks of testimony, the jury finds both men…”
- Jury verdict, Jul 14
Day 2185 · April 9, 1926
Madeiros confession
Imprisoned criminal Celestino Madeiros claims he participated in the robbery and that Sacco and Vanzetti were not involved. His statement is challenged but reignites doubt about the convictions.
“The verdict of guilty of murder in the first degree has…”
- Sentencing statement, Dedham Courthouse, Apr 9
“The case against Sacco and Vanzetti for murder rests on…”
- The Case of Sacco and Vanzetti, Atlantic Monthly, March 1927, Mar 1
“Imprisoned criminal Celestino Madeiros claims he…”
- Madeiros confession, Apr 9
Day 2666 · August 3, 1927
Appeals exhausted
Massachusetts Governor Alvan T. Fuller, after reviewing the case, declines to grant clemency. All legal avenues are exhausted.
“Judge Thayer has been their prosecutor throughout.”
- Statement to press, August 22, 1927, Aug 22
“Justice has been served.”
- Editorial, Boston Globe, August 22, 1927, Aug 22
“Massachusetts Governor Alvan T.”
- Appeals exhausted, Aug 3
Day 2686 · August 23, 1927
Execution
Nicola Sacco and Bartolomeo Vanzetti are executed by electric chair at Charlestown State Prison. International protests occur outside.
“I am not only innocent of the Braintree crime, but I never…”
- Final letter to his sister, August 22-23, 1927, Aug 23
“Nicola Sacco and Bartolomeo Vanzetti are executed by…”
- Execution, Aug 23
Afterward
What followed
- 1927 - International protests and diplomatic tensions. Executions of Sacco and Vanzetti on August 23, 1927 triggered massive demonstrations in Europe and Latin America. Italy's fascist government, freshly solidified under Mussolini, protested the executions, straining U.S.-Italian relations.
- 1927 - Labor movement radicalization. The case became a rallying point for anarchist and communist labor organizations. Communist Party USA used the trial extensively in recruitment efforts through the 1930s.
- 1958 - Cultural memory and artistic works. Woody Guthrie's song 'Sacco and Vanzetti' recorded; the case inspired novels, plays, and documentaries throughout the 20th century, cementing the narrative of injustice in American consciousness.
- 1960 - Legal scholarship on wrongful conviction. Harvard Law School and criminology departments began systematic study of the trial. Felix Frankfurter's 1927 critique evolved into a canonical example of systematic trial failures taught in law schools.
- 1997 - Massachusetts official exoneration. Governor William Weld issued a formal apology and declared Sacco and Vanzetti free of guilt, 70 years after their execution. This acknowledged ballistic evidence later cast serious doubt on the murder weapon identification.
The visual record.
At the cinema, on the charts.
The world it landed in
What was on the radio, the screen, and everyone's mind.
Same week, elsewhere
The trial occurred at peak anti-immigrant xenophobia (peak year for KKK membership was 1925; the trial ran 1921-1927) and during America's first Red Scare. Class warfare, anarchist fears, and Italian-American identity collided publicly. The execution became a touchstone for leftist politics globally-Italian fascists, Soviet communists, and American labor all claimed the case as evidence of capitalist injustice or radical threat, depending on viewpoint.
Then and now.
3 measurements then and now - the deltas the event left behind.
Then & now
The world the event landed in vs. the one it left behind.
Time from arrest to execution
7 years
1920
15-20 years average
2024
Sacco arrested May 5, 1920; executed August 23, 1927. Modern death penalty cases involve substantially longer appeals processes.
Public opinion on fairness of trial
Deeply divided by politics and ethnicity
1927
Historians estimate 80%+ view trial as unjust
2024
Contemporary accounts show Italian-American communities viewed conviction as persecution; modern scholarship largely agrees evidence was circumstantial.
Media coverage intensity
International headlines for 7 years
1920
Sustained academic and documentary focus
2024
1920s saw massive protests worldwide; today primarily studied in legal and labor history contexts.
Captured in time.
Captured before it changed
The web as it looked, the day it happened.
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Sacco and Vanzetti
en.wikipedia.org