Altona Bloody Sunday

Altona Bloody Sunday (German: Altonaer Blutsonntag) is the name given to the events of 17 July 1932 when a recruitment march by the Nazi SA led to violent clashes between the police, the SA and supporters of the Communist Party of Germany (KPD) in Altona, which at the time belonged to the Prussian province of Schleswig-Holstein but is now part of Hamburg. Eighteen people were killed.