I am doing some research on the riots and deaths (mostly civilians killed by the police) that occurred in Vienna, Austria, on July 15, 1927. This violent episode in Austria's history started as an unplanned protest by Vienna workers against a court decision that had freed two members of the Heimwehr who had shot and killed two unarmed Socialists during a march in a small city in Burgenland. The violence of these riots, and the nationwide strike that followed, strengthened support for the Heimwehr, a fascist military-political organization whose goal was to replace Austria's democratic system with a fascist government. After the violence of the riot and the police counter-strike, the February 1934 civil war -- which destroyed the Socialist Party -- was almost inevitable. At least 90 people were killed during this disturbance; most were Viennese workers -- supporters of the Socialist Party -- shot by police. Five policemen were killed. Over 600 people were injured.
I will be publishing a post on the history of this event in a few days. In the meanwhile, I found this British Pathe' newsreel clip with film of the Ministry of Justice building on fire and crowds milling around.