Coretti Arle Titz that she'd performed for a roomful of revolutionaries who used the concerts as fronts for their anti-government meetings. Through Burenin, Coretti was introduced to many other revolutionary actors, composers, musicians, artists and writers. From her new Bolshevik acquaintances, she became more familiar with the unrelenting fury and brutality of the Tsarist gendarmerie and Okhrana (secret police) upon the lower classes. The leaders of the proletariat were shadowed, hunted and sent to rot in distant Siberian prisons for their illegal underground activities. On June 28, 1914, Gavrilo Princip assassinated Archduke Franz Ferdinand of Austria in Sarajevo, setting in motion the events
Muhamed Mehmedbašić the way to Sarajevo, gendarmes searched the train; fearing they were on to him, he threw the knife out the window. Potiorek was planned to be assassinated at the end of March 1914, when the new mufti Čaušević was to be enthroned in Sarajevo. However, upon hearing that Archduke Franz Ferdinand of Austria would come to Sarajevo on Vidovdan, the Black Hand changed their minds. The Archduke's scheduled visit on Vidovdan (28 June), a Serbian national holiday, was perceived as an insult. Ilić summoned Mehmedbašić and informed him on 26 March that the plan now was to murder Archduke Franz