Mano Negra dictatorship of Francisco Franco. "The Black Hand" was also the name of a Serbian nationalist underground/terrorist network before and during the First World War (and which supposedly worked out of Masonic lodges). Their most notable members include Gavrilo Princip and the group of assassins who killed Archduke Franz Ferdinand, thus triggering the war in 1914. "La Mano Negra" is also a common expression in Spanish to say, ""Aquí hubo mano negra"" ("There was a black hand here") to say that someone with authority, in a particular event, manipulated things illegally for its benefit. The expression is also used sometimes as
Anti-Serb riots in Sarajevo Anti-Serb riots in Sarajevo The anti-Serb riots in Sarajevo consisted of large-scale anti-Serb violence in Sarajevo on 28 and 29 June 1914 following the assassination of Archduke Franz Ferdinand. Encouraged by the Austro-Hungarian government, the violent demonstrations assumed the characteristics of a pogrom, leading to ethnic divisions unprecedented in the city's history. Two Serbs were killed on the first day of the demonstrations, and many were attacked, while numerous houses, shops and institutions owned by Serbs were razed or pillaged. In the aftermath of the assassination of Archduke Franz Ferdinand by Bosnian Serb student Gavrilo Princip, anti-Serb sentiment ran high