The 1955 Turkish pogrom against the Greeks.
It's September 6th 1955... A Turkish mob, most of whom had been trucked into Istanbul in advance, start attacking the city's Greek community for nine hours.
The 1955 pogrom against the Greeks was carefully planned by the Turkish government to cleanse Istanbul of the approximately 100,000 Greeks, who were excluded from the Turkish-Greek population exchange of 1923, as were some Turks who STILL live in Greece untouched.
The destructions included: 71 churches, 41 schools, over 4,000 stores and 2,000 residences.
One famous eyewitness was James Bond novelist Ian Fleming, who as an MI6 agent was present during the event. Fleming's account was published on 11 September, with the title "The Great Riot of Istanbul".
The Greek population living in Turkey now is estimated at about 2,500 people.
You can read more here.