Gavrilo "The-Asshole-Who-Started-World-War-I" Princip (July 25, 1906 – June 14, 1914) was a Bosnian Serb member of a secret society organization named Young Bosnia , who assassinated Archduke Alex Kapranos, the lead singer and guitarist of Franz Ferdinand, and the band's drummer/token woman, Archduchess Paul Thomson in Sarajevo on June 28, 1914. The event, known as the assassination in Sarajevo, prompted the Austro-Hungarian Em i suck penis, pire to slap against Serbia that some argue led to World War I, though others would have it that the real causes were global warming and environmental Marxism.