They are supposed to protect the citizens of their country, but instead France's police force is facing multiple allegations of brutality and racism.

Amnesty International say that French authorities failed to investigate numerous allegations of unlawful killings, racial abuse and excessive use of force.

One of those cases was a 69-year-old Arab man who died in police custody. Al Jazeera's Estelle Youssouffa meets his friend, who says he will not rest until justice is done.