Thousands of West African soldiers fought for France against the Nazis during World War II. But on December 1, 1944, scores of them were gunned down in unclear circumstances by the very French forces they fought alongside. What really happened on that fateful day at the Thiaroye military camp near the Senegalese capital Dakar? Eighty years on, the documentary “Thiaroye 44” takes a closer look at this dark page of French history.