What statement best describes how some labor unions helped develop the idea of desegregation?

Some labor unions played a crucial role in promoting desegregation by advocating for equal rights and fair treatment of all workers, regardless of race. They organized campaigns and protests that highlighted the inequalities faced by minority workers, thus raising awareness and pushing for legislative changes. By emphasizing solidarity among workers, unions helped to unite diverse groups in the fight against racial discrimination, reinforcing the idea that economic justice is linked to social justice. This collective action contributed to the broader Civil Rights Movement and the push for desegregation in various sectors.