Tykocin pogrom
1941 CE.
Shown on the map at 53.203°, 22.771°.
The mass murders in Tykocin occurred on 25 August 1941, during World War II, where the local Jewish population of Tykocin (Poland) was killed by German Einsatzkommando.
Text from the Wikipedia article Mass murders in Tykocin, licensed CC BY-SA 4.0.