1918 protest in Zagreb
1918 CE.
Shown on the map at 45.813°, 15.977°.
On 5 December 1918, four days after the proclamation of the Kingdom of Serbs, Croats and Slovenes, the National Guards (an armed force of the National Council of the State of Slovenes, Croats and Serbs) and Sokol volunteers suppressed a protest and engaged in an armed clash against the soldiers of the 25th Regiment of the Royal Croatian Home Guard and the 53rd Regiment of the former Austro-Hungarian Common Army. National Guardsmen stopped the soldiers at the Ban Jelačić Square in Zagreb. Reasons for the protest and the conflict are not very well documented, but the soldiers who marched down Ilica Street from the Rudolf barracks towards the central city square shouted slogans against the King Peter I of Serbia and in support of republicanism and the Croatian People's Peasant Party leader Stjepan Radić. Once the soldiers reached the Ban Jelačić Square, brief negotiations took place, and then an armed clash afterwards. Most of the eighteen people killed in the clash were soldiers, and the dead protesters were dubbed December Victims (Croatian: Prosinačke žrtve).
Text from the Wikipedia article 1918 protest in Zagreb, licensed CC BY-SA 4.0.