It might have been done by a man! A dirty filthy drunken man.
Yeah! A man paid some women to be photographed with silly expressions.
To make fun of the movement.
Or by women who thought the movement was dumb and preventing them from "getting some".
I certainly would not expect the actual movement people to parody themselves.
IV: yes it was a real movement at that time but I'm just wondering if this a real picture of the women in it, or something else.