Journee Serbe Original propaganda poster. 25 June 1916. Poster issued in support of the Serbian refugees. After the Balkan Wars in 1912—1913 the Austro-Hungarian administration in Bosnia and Herzegovina became Serbophobic Oskar Potiorek, governor of Bosnia and Herzegovina, closed many Serb societies and significantly contributed to the anti-Serb mood before the outbreak of World War I. The assassination of Archduke Franz Ferdinand of Austria and Sophie, Duchess of Hohenberg in 1914 led to the Anti-Serb pogrom in Sarajevo, where angry Croats and Muslims engaged in violence during the evening of 28 June and much of the day on 29 June. This led to a deep division along ethnic lines unprecedented in the city's history. Ivo Andrić refers to this event as the "Sarajevo frenzy of hate." The crowds directed their anger principally at Serb shops, residences of prominent Serbs, Serbian Orthodox Church, schools, banks, the Serb cultural society Prosvjeta, and the Srpska rijeÄ newspaper offices. Two Serbs were killed that day. That night there were anti-Serb riots in other parts of the Austro-Hungarian Empire including Zagreb and Dubrovnik. In the aftermath of the Sarajevo assassination anti-Serb sentiment ran high throughout the Habsburg Empire. Austria-Hungary imprisoned and extradited around 5,500 prominent Serbs, sentenced 460 to death and established predominantly Muslim special militia Schutzkorps which carried on the persecution of Serbs. Good condition, backed on linen. France, 1916, artwork by P. Morgue, size 120x78cm