The historical significance of the Boston Massacre, which occurred on March 5, 1770, lies in its role as a catalyst for the American Revolution. Tensions were high between colonists and British soldiers due to taxation without representation and oppressive measures. The incident involved British soldiers firing into a crowd, killing five colonists, including Crispus Attucks. This event was heavily propagated through propaganda, notably by figures like Paul Revere, mobilizing public outrage against British rule. It helped galvanize colonial resistance and underscored the growing divide between the colonies and Britain, ultimately leading to the quest for independence.