An argument against this would be congress passing the Housing Act of 1949 which was intended to solve the housing problems in inner-city slums. Instead, the homes of hundreds of thousands were bulldozed and not enough new apartments were built. This law caused problems for America's poor.
An argument against this would be the growth of agribusiness, or where agricultural products were produced by large corporations. Small farmers could not compete, and as a result, thousands of poor rural whites and blacks lost their jobs and sank into deeper poverty.
An argument for this statement is that the American Indians didn't take the opportunities given to them from the Voluntary Relocation Program in the 50s and 60s. They were provided with help for finding jobs and housing, but many could not adapt to city life, resulting in further poverty.
