Gondrand massacre
1936 CE.
Shown on the map at 14.413°, 38.784°.
The Gondrand massacre was a 1936 Ethiopian attack on Italian workers of the Gondrand company. The massacre was reported to the League of Nations and was publicized by Fascist Italy in an attempt to justify its ongoing invasion of Ethiopia.
Text from the Wikipedia article Gondrand massacre, licensed CC BY-SA 4.0.