Dee and Davis were well-known civil rights activists in the Civil Rights Movement. Dee was a member of the Congress of Racial Equality (CORE), the NAACP, the Student Nonviolent Coordinating Committee, Delta Sigma Theta sorority, and the Southern Christian Leadership Conference. She was also as an active member of the Harlem Writers Guild for over 40 years. In 1963, Dee emceed the March on Washington for Jobs and Freedom. Dee and Davis were both personal friends of both Martin Luther King Jr. and Malcolm X, with Davis giving the eulogy at Malcolm X's funeral in 1965. In 1970, she won the Frederick Douglass Award from the New York Urban League.