Massacre of 14 July 1953 in Paris

The massacre of July 14, 1953 in Paris was an event in which the French police intentionally and without warning opened fire, causing 7 deaths (six Algerians and one French) and hospitalizing around 60 protesters and police officers. The incident occurred at the end of a parade organized by the French Communist Party (PCF) and the General Confederation of Labour (CGT) to celebrate the "values of the Republic" on the occasion of the French national holiday.

Source: Wikipedia — Massacre of 14 July 1953 in Paris (CC BY-SA 4.0)