Answer:
I think she says that because she was a labor activist. She and her people who are being affected by this are the only ones who understand truly what is happening. By them fighting for their rights, they eventually got their goals. Fighting for the equal labor rights of their people, is only something a person who is experiencing it can do. I do agree with her, the people who are suffering or who are being affected by it are the only ones who truly understand how difficult and terrible it is. That is why they are the ones who can offer the best solutions for the problem.