What did the white supremacy groups in the south say they were formed to do

They said they were formed to promote whites and oppress blacks, since whites were the superior race.

Opposition to the nra came to a head in 1935, when the conservative supreme court declared the agency unconstitutional, claiming the nra gave the executive branch regulatory powers that belonged exclusively to congress. this decision began a series of court decisions that overturned key elements of the new deal.