On March 5, 1770, British soldiers fired into a Boston crowd, killing five colonists — igniting the spark that would become the American Revolution.
On the night of March 5, 1770, a crowd of 300–400 colonists surrounded a lone British sentry outside Boston's Custom House, hurling insults, ice, and debris. When Captain Preston arrived with reinforcements, the tension exploded into one of history's most consequential street confrontations.
The first to fall was Crispus Attucks, a mixed-race former slave and sailor who had been leading the crowd. His death made him an enduring symbol of the American struggle for liberty — arguably the first person to die for what would become the United States.
When the smoke cleared, five colonists were dead and six were wounded. Though the soldiers fired without an official order, Patriot leaders immediately branded the event a 'massacre' and used it as powerful propaganda against British rule.
Paul Revere's dramatic engraving of the scene — depicting British soldiers firing in cold blood on peaceful citizens — became one of the most influential pieces of political propaganda in American history, circulated widely throughout the colonies.
In a remarkable act of principle, future President John Adams agreed to defend Captain Preston and the soldiers in court. He secured acquittals for most, arguing self-defense — a stance that cost him politically but cemented his reputation as a man of integrity.
Two soldiers were convicted of manslaughter and punished only by branding on the thumb — an extraordinarily light sentence that further outraged colonists and deepened anti-British sentiment across the colonies.
Samuel Adams and other Patriot leaders used the massacre relentlessly as a rallying cry against British tyranny. The anniversary was commemorated each year until it was supplanted by Independence Day, underscoring just how central this event was to revolutionary consciousness.