1 May 1944 Kaisariani executions
On 1 May 1944, 200 Greek communists (Greek: Οι 200 της Καισαριανής, The 200 of Kaisariani), known as the 200 of Kaisariani, were executed at the firing range of the Athens suburb of Kaisariani by the Nazi occupation authorities as reprisal for the killing of a German general by ELAS forces in Laconia. The executions were a seminal event of the Greek Resistance against the Axis forces, and the 200 are remembered as heroes in Greece to this day.
Source: Wikipedia — 1 May 1944 Kaisariani executions (CC BY-SA 4.0)