Extensive libraries have copies of Sanger's Pivot of Civilization and other works as well as Lothrop Stoddard's Rising Tide of Color. I suggest that anyone in doubt read these books and decide for themselves what Sanger and Stoddard were up to and what their successors ARE up to.
Other collaborators and co-conspirators of Sanger were H. G. Wells, Havelock Ellis, and other Euroleftist eugenics enthusiasts. In the US, she had such as Madison Grant as allies as well as Dr. Thomas and Hrs. Thomas Hepburn (parents of the imperious "Great Kate") who founded Connecticut Planned Barrenhood as the first non-NY affiliate in 1921.
In spite of her associations, however, she was, at most, a high school alumna and nursing school dropout and NOT a particularly educated woman other than bull sessions with her radical friends and, perhaps, a bit of self-"education" through reading books with which she agreed and which could reinforce her prejudices. She was articulate enough to know that she was preaching and promoting eugenics with an aim toward racial "cleansing."
Brother, you have got to stop making sense and cease making accurate historical references. It will cause folks to feel bad and that isn't nice.
I'll check out the university library. It ought to have quite a collection of Sangerabilia.