Greater Serbia the Kingdom of Serbia retreated from Durrës in April 1913 under pressure of the naval fleet of Great Powers, but it remained in other parts of Albania for the next two months. The secret military society called Unity or Death, popularly known as the Black Hand, headed by Serbian colonel Dragutin Dimitrijević Apis, which took an active and militant stance on the issue of a Greater Serbian state. This organization is believed to have been responsible for numerous atrocities following the Balkan Wars in 1913. In 1914, Young Bosnia member Gavrilo Princip assassinated Archduke Franz Ferdinand in Sarajevo, which set
Anti-Serb riots in Sarajevo Anti-Serb riots in Sarajevo The anti-Serb riots in Sarajevo consisted of large-scale anti-Serb violence in Sarajevo on 28 and 29 June 1914 following the assassination of Archduke Franz Ferdinand. Encouraged by the Austro-Hungarian government, the violent demonstrations assumed the characteristics of a pogrom, leading to ethnic divisions unprecedented in the city's history. Two Serbs were killed on the first day of the demonstrations, and many were attacked, while numerous houses, shops and institutions owned by Serbs were razed or pillaged. In the aftermath of the assassination of Archduke Franz Ferdinand by Bosnian Serb student Gavrilo Princip, anti-Serb sentiment ran high