Born to an African-American family in Birmingham, Alabama, Davis studied French at Brandeis University and philosophy at the University of Frankfurt in West Germany. Studying under the philosopher Herbert Marcuse, a prominent figure in the Frankfurt School, Davis became increasingly engaged in far-left politics. Returning to the United States, she studied at the University of California, San Diego, before moving to East Germany, where she completed a doctorate at the Humboldt University of Berlin. After returning to the United States, she joined the Communist Party and became involved in numerous causes, including the second-wave feminist movement and the campaign against the Vietnam War. In 1969 she was hired as an acting assistant professor of philosophy at the University of California, Los Angeles (UCLA). UCLA's governing Board of Regents soon fired her due to her Communist Party membership; after a court ruled this illegal, the university fired her again, this time for her use of inflammatory language.