With very few exceptions, humanity lived in patriarchies. I will let the anthropologists (and not the neo-liberal politicians) to justify the reasons for it. However, when a strongly traditional patriarchic society needs within a short time to miraculously transform such notions into feminine equality, and even experience the arrogance of  feminists, the backlash is this terrible scourge of violence against women, the "gender  confusion", the new laws of gay marriage, etc.