LOL!! You misinterpreted the Sanger quote. A deliberate lie.
She was a eugenicist, but NOT a racist. You need to read the "Sanger" wiki link below in its entirety to understand her better.
en.wikipedia.org
New York University's Margaret Sanger Papers Project says that though the letter would have been meant to avoid the mistaken notion that the Negro Project was a
racist campaign, detractors of Sanger, such as
Angela Davis, have interpreted the passage "as evidence that she led a calculated effort to reduce the Black population against its will".
Sanger's eugenics policies included an exclusionary immigration policy, free access to birth control methods, and full
family planning autonomy for the able-minded, as well as compulsory segregation or sterilization for the "profoundly retarded". Sanger wrote, "we [do not] believe that the community could or should send to the lethal chamber the defective progeny resulting from irresponsible and unintelligent breeding.
Then you need to read the Planned Parenthood link below to see the nexus between PP and Sanger. There was no racist eugenics, just "planned parenthood" trying to improve lives by limiting children to the number you could support.
en.wikipedia.org