People put up a poster of Gavrilo Princip, the 19-year-old Bosnian Serb who gunned down Archduke Franz Ferdinand in 1914 and lit the fuse for World War One, in Bosansko Grahovo, next to Princip's birth village in Obljaj, June 27, 2014. Bosnian Serbs will open the birth house of Gavrilo Princip in Obljaj on Saturday in honour of Princip, on the centenary of the assassination. Different centenary commemorations of the event speak volumes to Bosnia a century on, where perceptions of Princip have been warped by time and politics, and wounds are still raw from the bloody demise of Yugoslavia. Serbs see Princip as a heroic fighter for the freedom of all southern Slavs from centuries of imperial occupation over the Balkans while to others, he was a nationalist terrorist whose gunshot heralded four years of slaughter and suffering, as more than 10 million soldiers died and empires crumbled. The poster reads: "We are all Gavrilo". REUTERS/Srdjan Zivulovic (BOSNIA AND HERZEGOVINA - Tags: POLITICS CONFLICT ANNIVERSARY)