How did different non governmental organizations and progressives work to shape public policy, restore economic opportunities and correct injustices in american life ?

Non-government organizations tend to have wider reach in helping minorities coompared to government organization.
Organization such as NAACP for example, provide services to help eliminate social injustices by giving free Job agencies and law-related help for minorities.
Progressive work such as welfare and healthcare will also help lower-middle class people to thrive in the conomy which will help them to build their wealth for the future.