The documentary “Dahomey” by French-born director Mati Diop about the return of looted African art has won the Golden Bear, the top prize as best film of the Berlin film festival Berlinale, the jury announced Saturday evening in the German capital. It was the second time that a documentary film won the Berlinale’s coveted Golden Bear. In her film, Diop, 41, who has Senegalese roots, accompanies 26 statues on their journey from France to their country of origin, today’s Benin. The looted art treasures were stolen from Dahomey, which is now Benin, in 1892. In total, around 7,000 works of art wer…