Massacre of July 15, 1927: Eighty-nine protesters are killed by the Austrian police in Vienna.

The July Revolt of 1927 (also known as the Vienna Palace of Justice fire, German: Wiener Justizpalastbrand) was a major riot starting on 15 July 1927 in the Austrian capital Vienna. It culminated with police forces firing into the outraged crowd, killing 89 protesters, while five policemen died. More than 600 protestors and around 600 policemen were injured.