Nicola Sacco (pronounced [nikla sakko]; April 22, 1891 August 23, 1927) and Bartolomeo Vanzetti (pronounced [bartolomo vantsetti, -dzet-]; June 11, 1888 August 23, 1927) were Italian immigrant anarchists who were controversially accused 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. Seven years later, they were executed in the electric chair at Charlestown State Prison.

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. Anti-Italianism, anti-immigrant, and anti-Anarchist bias were suspected as having heavily influenced the verdict. 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 pretrial 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 Supreme Judicial 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 clbres 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, Melbourne, So Paulo, Rio de Janeiro, Buenos Aires, Dubai, Montevideo, Johannesburg, and Auckland.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. Even the Italian fascist dictator Benito Mussolini recognized their innocence and attempted to pressure American authorities to have them released. The two 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.Investigations in the aftermath of the executions continued throughout the 1930s and 1940s. The publication of the men's letters, containing eloquent professions of innocence, intensified belief in their wrongful execution. Additional ballistics tests and incriminating statements by the men's acquaintances have clouded the case. On August 23, 1977the 50th anniversary of the executionsMassachusetts Governor Michael Dukakis issued a proclamation that Sacco and Vanzetti had been unfairly tried and convicted and that "any disgrace should be forever removed from their names".

Braintree (US: ), officially the Town of Braintree, is a municipality in Norfolk County, Massachusetts, United States. Although officially known as a town, Braintree is a city, with a mayor-council form of government, and is considered a city under Massachusetts law. The population was 39,143 at the 2020 census. The city is part of the Greater Boston area with access to the MBTA Red Line, and is a member of the Metropolitan Area Planning Council's South Shore Coalition. The first mayor of Braintree was Joe Sullivan who served until January 2020. The current mayor of Braintree is Charles Kokoros.Braintree, Massachusetts, is named after Braintree, Essex, in England. The town was first chartered in 1640. Later, some sections of Braintree formed separate municipalities: Quincy (1792), Randolph (1793), and Holbrook (1872).