My mother says that, with feminism, each generation has to reinvent the wheel. I see this as her generous way of saying that, essentially, there are no new struggles, just as they say that there are really only seven kinds of plot in fiction. Finding your feminism can make you temporarily evangelical; it certainly did me, in the aftermath of an assault. The world burned with injustice that I wanted to correct, and though my mother knew these injustices well, just as many women had before her, she gave me the space to draw my own conclusions, to find my own model of social justice. She passed on the baton, but then she let me run with it.
The fourth wave of feminism has been eventful, and as a political ideology it has become mainstream like never before.
Every generation has to do it, there have only been four generations.
That beats 6006 BC as a starting point, dunnit?