Margaret Sanger

In her 1922 book Pivot of Civilization, Sanger called for segregation of "morons, misfits, and the maladjusted" and sterilization of "genetically inferior races." She also came up with a plan to reach the black community with her message. Under the "Negro Project," she hatched a scheme to use black preachers and doctors to hype contraception, sterilization, and child killing.

She wrote, "The most successful educational approach to the Negro is through a religious appeal. We do not want the word to get out that we want to exterminate the Negro population, and the minister is the man who can straighten out that idea if it occurs to any of their more rebellious members."

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Note - According to Wikipedia, Margaret Higgins Sanger was an American birth control activist, an advocate of negative eugenics, and the founder of the American Birth Control League (which eventually became Planned Parenthood). Initially met with fierce opposition to her ideas, Sanger gradually won some support, both in the public as well as the courts, for a woman's choice to decide how and when she will bear children. Margaret Sanger was instrumental in opening the way to universal access to birth control.