Nicola Sacco and Bartolomeo Vanzetti were Italian-born American anarchists who were convicted of murdering a guard and a paymaster during the April 15, 1920 armed robbery of the Slater and Morrill Shoe Company in Braintree, Massachusetts, United States. They were executed in the electric chair seven years later at Charlestown State Prison. Both men adhered to an anarchist movement that advocated relentless warfare against a violent and oppressive government.
After a few hours' deliberation on July 14, 1921, the jury convicted Sacco and Vanzetti of first-degree murder and they were sentenced to death by the trial judge. A series of appeals followed, funded largely by the private Sacco and Vanzetti Defense Committee. The appeals were based on recanted testimony, conflicting ballistics evidence, a prejudicial pre-trial statement by the jury foreman, and a confession by an alleged participant in the robbery. All appeals were denied by trial judge Webster Thayer and also later denied by the Massachusetts State Supreme Court. By 1926, the case had drawn worldwide attention. As details of the trial and the men's suspected innocence became known, Sacco and Vanzetti became the center of one of the largest causes célèbres in modern history. In 1927, protests on their behalf were held in every major city in North America and Europe, as well as in Tokyo, Sydney, São Paulo, Rio de Janeiro, Buenos Aires, and Johannesburg.
Celebrated writers, artists, and academics pleaded for their pardon or for a new trial. Harvard law professor and future Supreme Court justice Felix Frankfurter argued for their innocence in a widely read Atlantic Monthly article that was later published in book form. Sacco and Vanzetti were scheduled to die in April 1927, accelerating the outcry. Responding to a massive influx of telegrams urging their pardon, Massachusetts governor Alvan T. Fuller appointed a three-man commission to investigate the case. After weeks of secret deliberation that included interviews with the judge, lawyers, and several witnesses, the commission upheld the verdict. Sacco and Vanzetti were executed in the electric chair just after midnight on August 23, 1927. Subsequent riots destroyed property in Paris, London, and other cities.