Conversation so far:
What kind of work did activist Margaret Sanger do with the African-American community?
Margaret Sanger worked with African American leaders and professionals who saw a need for birth control in their communities.
Was Margaret Sanger arrested for her work with the African-American community?
No. Margaret Sanger was arrested, but not for working with the African-American community.
What other facts can you tell me about how Margaret Sanger worked with the african-american community besides working with leaders and birth control?
In 1929, James H. Hubert, a black social worker and the leader of New York's Urban League, asked Margaret Sanger to open a clinic in Harlem.

Question: When did she stop working with birth control federation of america?
Self-contained rewrite: When did Margaret Sanger stop working with birth control federation of america?