Activist
Margaret Sanger was an American birth control activist and the founder of the American Birth Control League. [1]
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The following passage is from Ellen Chesler's Woman of Valor: Margaret Sanger and the Birth Control Movement in America (pp. 135):
"Though she had long considered herself an atheist, she never completely abandoned the quest for absolutism that Catholicism instilled in her as a child and that Socialism briefly supplanted."