On 17 October 1961, French police turned against Algerian demonstrators in Paris. Some were shot, others drowned in the Seine. For years the killings were not acknowledged. We hear from one man whose sister died that day.

(Photo: Demonstrators, arrested during a march by between 20,000 and 30,000 pro-Front de Liberation Nationale (FLN) Algerians, are seen in a bus on October 17, 1961 in Paris. French police attacked the illegal but peaceful demonstration.)

(Credit AFP/Getty Images)