The Constantinople massacre of 1821 was orchestrated by the authorities of the Ottoman Empire against the Greek community of Constantinople in retaliation for the outbreak of the Greek War of Independence (1821–1830). As soon as the first news of the Greek uprising reached the Ottoman capital, there occurred mass executions, pogrom-type attacks, destruction of churches, and looting of the properties of the city's Greek population. The events culminated with the hanging of the Ecumenical Patriarch, Gregory V and the beheading of the Grand Dragoman, Konstantinos Mourouzis.