Shell House massacre
1994 CE.
Shown on the map at -26.204°, 28.038°.
The Shell House massacre was a 1994 shooting incident that took place at Shell House, the headquarters of the African National Congress (ANC), in central Johannesburg, South Africa in the lead up to the 1994 elections.
Text from the Wikipedia article Shell House massacre, licensed CC BY-SA 4.0.