I was having this discussion once with someone, and now I am curious:
Q: What proportion of today's Algerian immigrants (of first and second generation, who may or may not have French nationality) in France are descendants of Harkis, i.e. Muslims who served in the French Army during the Algerian War?
My interlocutor was claiming that almost all of them are. I have my doubts, but could not find statistics on this. Is there an official figure somewhere?
Addendum: this might be a tricky one, since statistics based on ethnicity are typically forbidden in France and the war in Algeria and the Harkis remain kind of a touchy subject.