Kate Millet was the author of Sexual Politics (in the 1960s) and the founder of NOW. She was certifiably mental, urged revolutionary overthrow of the status quo, and promoted relations between adult women and minor girls (it is covered in her Wikipedia profile). The account I posted came from her sister Mallory.
Back in the 80s I went to one of these 'group' meetings believing it was going to be about domestic abuse i.e. husbands beating their wives and how to become involved in 'helping' women in the situation (I was from such a marriage). Anyway, it turned into a white male bashing session. Nothing about domestic violence. That pretty well quelched any other 'group' meetings with females for me.
Most Americans didn't even know about this type of activity back then and if they did, they, me included, thought that there were so few in number, it would just 'go away' at some point.