When did we become Enemies?

It seems that, as time goes by, women and men have become more adversarial in their relationship. I am simply questioning, "when did the shift happen?" When did it become a percieved battle between the sexes as opposed to a collective struggle for equality? We have been asleep at the wheel and allowed for destructive ideologies to enter our communities. Ideologies take us away from each other and interject us with a bitterness towards each other. It is no wonder that relationships seem to be a thing of the past. Along with the idea of a good man or woman, or simply the notions of the simple.