Son Tra massacre
1968 CE.
Shown on the map at 15.386°, 108.778°.
The Sơn Trà Massacre was a massacre of South Vietnamese civilians committed by the Viet Cong (VC) during the Vietnam War, in Sơn Trà village, Bình Sơn district, Quảng Ngãi province, South Vietnam on 28 June 1968.
Text from the Wikipedia article Sơn Trà massacre, licensed CC BY-SA 4.0.