A man covers his face by graffiti on a wall showing Gavrilo Princip, the Bosnian-Serb nationalist who assassinated Archduke Franz Ferdinand in 1914, in Belgrade, Serbia, Tuesday, Aug. 30, 2016. On the left side are written the words that, by the legend, Princip inscribed on the wall of his cell shortly before his death: ”Our shadows will walk through Vienna, wander the palace, frighten the lords.” (AP Photo/Darko Vojinovic)