A protest rally sticker (with glue still intact) from the March-on-Washington Movement reads: “Winning Democracy for the Negro Is Winning the War for Democracy.”
The black community fought on two fronts during World War II, for the “double V”: victory over fascism abroad and over racism at home. Organizing for the March on Washington was successful, and the mere threat of the march compelled President Franklin D. Roosevelt to establish a Fair Employment Practices Commission (FEPC) in an effort to break down discrimination in the defense and other industries.
See this image in the Ordinary People, Extraordinary Lives: 100 Years of Labor in New York City exhibit.