Rape culture is indeed a product of systemic and institutionalized patriarchy. And furthermore It was prevalent during wars and battles where men fought, and some were  killed, and the surviving trophies were women, of which  some where raped. Our closest example is the colonization of South Africa in 1652, where the southern part got under attack from Europeans, and the  indigenous fought and lost their women to the victorious.Today, western and northern Cape is predominately  populated by people of mixed race.