Liam O'Mara IV, PhD
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liamomaraiv.bsky.social
Liam O'Mara IV, PhD
@liamomaraiv.bsky.social
Snarky history professor and political commentator; bibliophile; anti-nationalist libsoc antifa mountain man; geeky cat & bird dad; views are entirely my own, not my employer's.
In their effort to catch up with the #USSR, which had already placed two cosmonauts into orbit, the US on #ThisDayInHistory in 1961 launched the #MercuryAtlas5 mission, taking the #chimpanzee Enos into orbit. Enos returned safely and remains the only chimp to have been in orbit.
November 29, 2025 at 5:00 PM
"#Pig" has been used to refer to #police in Britain since the 19th c., but it only spread in the US during the 1960s. The #BlackPower movement was key to that, and on #ThisDayInHistory in 1969 the #BlackPantherParty newspaper controversially used a drawing of pigs being killed.
November 29, 2025 at 4:30 PM
TRIGGER WARNING:
On #ThisDayInHistory in 1948, in a brutal war to keep colonies in #SouthEastAsia, the army of #France committed the #MỹTrạchMassacre in #Vietnam. Their #WarCrimes included mass sexual assaults, burning 326 houses, and killing at least 170 women & 157 children.
November 29, 2025 at 4:00 PM
The #ZongMassacre began on #ThisDayInHistory in 1781. A British #SlaveShip experienced navigation errors and ran low on water, so they began tossing #Africans overboard. They were insured, so the company lost no profits as more than 130 innocents were thrown into watery deaths.
November 29, 2025 at 3:30 PM
After spending time fighting the Italian #Fascists, the #communist #partisans of #Albania had to face a #Nazi German occupation from 1943. Yet they continued kicking butt and by #ThisDayInHistory in 1944 the unified leftist resistance had driven the last Nazi troops from Albania.
November 29, 2025 at 3:00 PM
#ThisDayInHistory in 1864, US military attacked a peaceful band of #Cheyenne & #Arapaho who flew an American flag in the #SandCreekMassacre. 170 unarmed people were butchered. The chief had signed away 90% of their land when #gold was found on it. #Genocide was always the point.
November 29, 2025 at 2:30 PM
On #ThisDayInHistory in 1947, UN passed a non-binding #partition resolution for #Palestine. #Palestinians reacted with outrage and riots, while #Zionist militias carried out massacres and expanded their land claims. The colonists chose to seize all the land instead of sharing it.
November 29, 2025 at 2:00 PM
#MargaretThatcher resigned her leadership of the #Conservative Party on #ThisDayInHistory in 1990, losing also her position as Prime Minister, with both jobs going to #JohnMajor. #Thatcher remains a polarizing figure who pushed UK politics rightward to #neoliberalism & #nativism.
November 28, 2025 at 6:00 PM
#FriedrichEngels was born on #ThisDayInHistory in 1820 in the Kingdom of Prussia. A family businessman, he helped to bankroll close friend #KarlMarx so the latter could focus on writing. #Engels also produced key texts in #socialist thought, including works opposing #patriarchy.
November 28, 2025 at 5:30 PM
The world took another major step towards oblivion on #ThisDayInHistory in 1958 with the launch of the #SM65Atlas. The first operational Intercontinental Ballistic Missile (#ICBM), it allowed the US to send nuclear weapons anywhere on Earth. The US has never disclaimed first-use.
November 28, 2025 at 5:00 PM
The #KilmichaelAmbush took place on #ThisDayInHistory in 1920, one week after #BloodySunday. #IrishRepublicanArmy militants surprised a division of well-trained #RoyalIrishConstabulary, killing 16 veteran British troops to the loss of only three #IRA fighters: a significant win.
November 28, 2025 at 4:30 PM
#Racist #terrorism and legal tricks reduced the amount of land owned by black people in #Mississippi by 90% during the 20th century. #ThisDayInHistory in 1903 was a representative #lynching -- a black farmer named #HenryList was killed by #WhiteSupremacist thugs, the #Whitecaps.
November 28, 2025 at 4:00 PM
The #AxumMassacre began on #ThisDayInHistory in 2020. #Eritrea's armed forces took advantage of the #TigrayWar to enter #Ethiopia and kill civilians indiscriminately, with around 800 dead according to AP reports. Widespread looting also occurred, with some victims forced to help.
November 28, 2025 at 3:30 PM
On #ThisDayInHistory in 1985, an internal report at #Shell revealed 100 years of #GlobalWarming and a 0.5°C rise to that point, and correctly predicted another 1-2°C rise over the next 40 years. It then funded & spread #ClimateChange. #Capitalism kills.

zurl.co/DUWB2
November 28, 2025 at 3:01 PM
On #ThisDayInHistory in 1980, during the #IranIraqWar, the Iranian Navy managed to surprise and crush the small Iraqi navy. #Iraq had outfitted two offshore oil rigs with surveillance equipment, so #Iran destroyed both along with most Iraqi naval vessels in #OperationMorvarid.
November 28, 2025 at 2:30 PM
The #TehranConference began on #ThisDayInHistory in 1943. The first #BigThree meeting of #Stalin, #Churchill, and #FDR, it committed the US & UK to opening a second #WWII front in the west. The location was seen as safe because of the joint Anglo-Soviet invasion of #Iran in 1941.
November 28, 2025 at 2:01 PM
On #ThisDayInHistory in 1905, newspaper editor and writer #ArthurGriffiths founded #SinnFéin. The name means 'We Ourselves' and it is an #anticolonial #nationalist party of the left. Griffiths won a majority and later represented Ireland in independence negotiations with the UK.
November 28, 2025 at 1:30 PM
On #ThisDayInHistory in 1843, the British & French governments recognized the independence and territorial integrity of the #KingdomOfHawaii. Alas, the US would not bother respecting #Hawaii's status, and a country founded in 1795 was toppled in an 1893 coup by American settlers.
November 28, 2025 at 1:00 PM
#AlsoSprachZarathustra, the epic #TonePoem by #RichardStrauss, was first performed in 1896 on #ThisDayInHistory. The piece was inspired by a #FriedrichNietzsche book of the same title, and its opening grew in fame after use in #StanleyKubrick's film 2001.

zurl.co/T64IG
November 27, 2025 at 9:30 PM
With #Nazi forces having invaded #VichyFrance on 10 Nov. 1942, on #ThisDayInHistory the French fleet based in #Toulon was scuttled en masse to keep it out of German hands. 77 naval vessels were successfully destroyed, leaving only a few small vessels for a thieving #Kriegsmarine.
November 27, 2025 at 9:00 PM
#AlgerHiss was released from prison on #ThisDayInHistory in 1954. He was accused of spying for the #USSR in the 1930s, and gaoled for perjury when they couldn't make that stick. No evidence has been found that shows him a spy, and his life was ruined by #HUAC based on rumour.
November 27, 2025 at 8:30 PM
On #ThisDayInHistory in 2001, the #HubbleSpaceTelescope detected a hydrogen atmosphere on #Osiris (#exoplanet #HD209458b). A "hot Jupiter", Osiris is a gas giant orbiting close to its star (much closer than Mercury is to ours), located about 48 parsecs from our own solar system.
November 27, 2025 at 7:30 PM