The Boston Massacre, a riot known as the Incident on King Street by the British, takes place in Boston, Massachusetts on March 5, 1770. British Army soldiers shoot and kill several people while under attack by a mob.

The incident is heavily publicized by leading Patriots, such as Paul Revere and Samuel Adams, to encourage rebellion against the British authorities. British troops have been stationed in Boston, capital of the Province of Massachusetts Bay, since 1768 in order to protect and support crown-appointed colonial officials attempting to enforce unpopular Parliamentary legislation.

Amid ongoing tense relations between the population and the soldiers, a mob forms around a British sentry, who is subjected to verbal abuse and harassment. He is eventually supported by eight additional soldiers, who are subjected to verbal threats and repeatedly hit by clubs, stones and snowballs. Without orders, they fire a ragged series of shots into the crowd, striking eleven men. Three Americans, ropemaker Samuel Gray, mariner James Caldwell, and Crispus Attucks, die instantly. Samuel Maverick, a 17-year-old apprentice ivory turner, is struck by a ricocheting musket ball at the back of the crowd and dies a few hours later, in the early morning of the next day. An Irish immigrant, Patrick Carr, dies two weeks later. Christopher Monk, another apprentice, is one of those seriously wounded in the attack. Although he recovers to some extent, he is crippled and eventually dies in 1780, purportedly due to the injuries he had sustained in the attack a decade earlier.

The crowd eventually disperses after Acting Governor Thomas Hutchinson promises an inquiry, but the crowd re-forms the next day, prompting the withdrawal of the troops to Castle Island. Eight soldiers, one officer, and four civilians are arrested and charged with murder. Defended by lawyer and future American president John Adams, six of the soldiers are acquitted, while the other two are convicted of manslaughter and given reduced sentences. The men found guilty of manslaughter are sentenced to branding on their hand. Depictions, reports, and propaganda about the event, notably the colored engraving produced by Paul Revere, further heighten tensions throughout the Thirteen Colonies.

(Pictured: Famous depiction of the Boston Massacre engraved by Paul Revere (copied from an engraving by Henry Pelham), colored by Christian Remick, and printed by Benjamin Edes. The Old State House is depicted in the background.)