Retrograde in History · 1781

Zong massacre

On November 29, 1781, Mercury was mid-loop — retrograde in Sagittarius, tracing backward through 5°02′ of the sign.

WhenNovember 29, 1781♐︎Sagittarius 5°02′Rx windowNov 18 – Dec 8, 1781
Mercury retrograde♐︎SagittariusWikipedia
The record

On 29 November 1781, the crew of the British slave ship Zong deliberately drowned more than 130 enslaved African people to claim insurance on them as cargo.

Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.