Despite immense public pressure and personal risk to his reputation, John Adams successfully defended British soldiers accused of murdering colonists in the Boston Massacre ten months earlier. The jury acquitted six of the eight soldiers outright, convicting two of manslaughter with reduced sentencing. Adams's insistence on a fair trial for deeply unpopular defendants became, in later American memory, a foundational example of legal principle triumphing over political passion.
With three ships loaded with taxed East India Company tea sitting in Boston Harbor, thousands of colonists crowded into the Old South Meeting House on December 6, 1773, demanding Governor Thomas Hutchinson allow the ships to leave without unloading their cargo. Hutchinson refused, and two nights later, colonists disguised as Mohawk warriors dumped 342 chests of tea into the harbor, a defiant act that accelerated the road to revolution.
The Nutcracker premiered at St. Petersburg's Mariinsky Theatre as part of a double bill with Tchaikovsky's opera Iolanta. Critics found the plot thin and complained that a children's fairy tale made poor material for grand ballet, and even Tchaikovsky himself doubted its quality. It took decades, and a full staging boom in America after 1944, for the work to become the seasonal fixture it is today.
During the Panic of 1907, with trust companies collapsing and the stock exchange on the verge of shutting down, financier J.P. Morgan summoned New York's bank presidents to his private library and effectively locked them in until they agreed to fund a rescue pool. His personal intervention averted a wider collapse but exposed how dangerously dependent the U.S. financial system was on one man's judgment, a realization that led directly to the creation of the Federal Reserve in 1913.
With Russia consumed by revolution, Finland's Senate seized the moment and declared independence on December 6, 1917. The move set off a brief but brutal civil war between Reds and Whites the following year, but the declaration itself stood, and December 6 remains Finland's national day, marked each year with candlelit windows across the country.
At 9:04 a.m., the Mont-Blanc, loaded with over 2,600 tons of wartime explosives, detonated in Halifax Harbor after colliding with the Norwegian ship Imo. The blast leveled the Richmond district, killed approximately 2,000 people, injured 9,000 more, and blew out windows dozens of miles away. It remains the largest accidental explosion in history prior to the nuclear era.
After months of negotiation, delegates including Michael Collins signed the Anglo-Irish Treaty in the early hours of December 6, 1921, establishing the Irish Free State as a self-governing dominion within the British Commonwealth. The treaty ended the guerrilla war against British rule but split the independence movement, since it required an oath of allegiance to the Crown and partitioned Northern Ireland, grievances that ignited a civil war within months.
As Japanese task forces steamed toward Pearl Harbor and Southeast Asia, Roosevelt made a last-ditch diplomatic gesture, cabling Emperor Hirohito directly to urge withdrawal of Japanese troops from Indochina and a peaceful resolution. The message arrived too late to matter: Japanese military planning was already irreversible, and within hours American codebreakers had decrypted enough intercepts to sense catastrophe approaching, though not fast enough to prevent it.
Apollo 17 thundered off Pad 39A at 12:33 a.m. Eastern time, turning night into day across the Florida coast and marking NASA's final crewed lunar mission. Commander Eugene Cernan and geologist Harrison Schmitt would spend over three days on the surface, the longest of any Apollo mission, before Cernan became the last human to step off the Moon.
Commander Gerald Carr, pilot William Pogue, and scientist Edward Gibson lifted off aboard the final crewed mission to Skylab, America's first space station. Over 84 days they conducted extensive solar observations, including detailed studies of a massive coronal mass ejection, and orbited Earth over 1,200 times. Their mission, though marred early on by a brief crew strike over an overloaded schedule, ultimately set an American endurance record that stood for years.
Marc Lépine entered the École Polytechnique engineering school, separated men and women in a classroom, and declared he was fighting feminism before shooting the women. He killed 14 female students and staff and wounded 14 others before taking his own life. The massacre became a watershed in Canadian public life, spurring gun-control legislation and an annual national day of remembrance for gender-based violence.