The sin of men who have domineered and abused women, and the sin of women who seek to rule over men (Gen 3:16).
The irony of the movement, is that is largely about the destruction of women's roles - and the promotion of men's roles.
Albert Mohler has struck the nail on the head.
"[legalized abortion] was supposed to grant enormous freedom to women, but it has had the perverse result of freeing men and trapping women"
"The availability of abortion means, in the thinking of many men, that the entire responsibility for pregnancy and parenthood now falls to women. If a woman refuses to have an abortion, having the baby is simply her 'choice.'"
"Prior to the legalization of abortion in the United States, it was commonly understood that a man should offer a woman marriage in case of pregnancy, and many did so."Of course feminists are interested in the roles of leader and provider (freeing women from needing men). But, I never see arguments that nearly all garbage collectors are men, or that men need to raise children and keep the home...
The roles for men and women were created by God, before the Fall. The Fall has twisted and perverted those roles, our attitudes towards them, and our execution of these roles. But to reject the roles is to reject God.
Which brings me to women as pastors. A great analogy I have come up with since writing that: "Pastor is comparable to garbage collector". It is not the apex of achievement, but rather a dirty and thankless (although vital) job.
Similarly, the man's role as leader and provider. This is not an excuse for laziness and domineering. It is rather a duty to serve, just as Jesus did.