The large numbers of soldiers returning from World War I, who wanted their jobs and racial discrimination back (or to restore the status quo ante), tended to curtail the civil rights of women and African Americans in their new-found freedom and job opportunities.
Many women who took up factory jobs were dismissed when the men returned. They returned to become full-time homemakers. Some women decided to learn new jobs, like tailoring, hairdressing, and teaching. These jobs were chiefly seen as women's.
For the African Americans, their civil rights were drastically reduced with increased segregation and racial discrimination in the South and at workplaces. This increase gave them an incentive to accelerate the Great Migration to the West and North.
Thus, the large numbers of soldiers returning from the war curtailed the civil rights of women and African-Americans, encouraging them to seek to retain their new-found freedom and job opportunities.
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