French Statesman. He rose to become the leader of the French Socialist Party at the beginning of the 20th century. After the organization morphed into the French Section of the Workers' International in 1905, he worked to stem the tensions in Europe that was leading to war. He was assassinated by Raoul Villain, a French Nationalist, only a month after Archduke Franz Ferdinand was assassinated in Serbia, an event that touched off World War I. After the war Villain was acquitted, provoking huge demonstrations. Jean Jaures entered the Pantheon in 1924.