During the 1920s, Bass became co-president of the Los Angeles chapter of the
Universal Negro Improvement Association, founded by
Marcus Garvey. Bass formed the Home Protective Association to defeat housing covenants in all-white neighborhoods. She helped found the Industrial Business Council, which fought discrimination in employment practices and encouraged black people to go into business. As editor and publisher of the
California Eagle, the oldest black newspaper on the West Coast, Bass fought against
restrictive covenants in housing and segregated schools in Los Angeles. She campaigned to end job discrimination at the Los Angeles General Hospital, the Los Angeles Rapid Transit Company, the Southern Telephone Company, and the
Boulder Canyon Project. During the
Great Depression of the 1930s, she continued to encourage black businesses with the campaign known as "Don't Buy Where You Can't Work". A longtime Republican, she voted for President
Franklin D. Roosevelt, a Democrat, in 1936. In 1940, the Republican Party chose Bass as western regional director for
Wendell Willkie's presidential campaign. Three years later, she became the first African-American grand jury member for the Los Angeles County Court. Also in 1943, Bass led a group of black leaders to the office of the Mayor of Los Angeles,
Fletcher Bowron. They demanded an expansion of the Mayor's Committee on American Unity, more public mass meetings to promote interracial unity, and an end to the discriminatory hiring practices of the privately owned Los Angeles Railway Company. The mayor listened, but agreed to do no more than to expand his committee. Then later in the 1940s, Bass left the Republican Party and joined the Progressive Party because she believed neither of the major parties was committed to civil rights. Bass also ran for the Los Angeles City Council in the 1940s using the song-title slogan “
Don't Fence Me In” to highlight her condemnation of
housing discrimination. That year, she was nominated for vice president of the United States by the Progressive Party. She was the running mate of lawyer
Vincent Hallinan. Bass became the first African-American woman to run for vice president of the United States. Her platform called for civil rights, women's rights, an end to the Korean War, and peace with the Soviet Union. Bass's slogan during the vice presidential campaign was, "Win or lose, we win by raising the issues." She was endorsed by Paul Robeson,
W.E.B. DuBois and
Ada B. Jackson in campaign material during her run. She began the campaign on her own as Hallinan served out a six-month contempt of court sentence arising from his legal defense of union leader
Harry Bridges. Bass worked on issues that also attracted
Luisa Moreno, who was active in Afro-Chicano politics in Los Angeles during the 1930s-1950. No record shows that the two women ever met, but in 1943 both served on the
Sleepy Lagoon Defense Committee, a multiracial group that fought for the release of several Chicanos convicted of murder by an
all-white jury making Bass and Moreno part of the same "constellation" of struggle. Bass wrote her last column for the
California Eagle on April 26, 1951, and sold the paper soon after. Considering the sum of her career as she was completing her autobiography,
Forty Years (1960), Bass wrote: In 1966, Bass had a stroke and afterwards retired to a Los Angeles nursing home. == Inter-racial political activities ==