Interesting. Wallace, Buchanan, etc. railing against the rich is something that's not usually mentioned; usually we just hear about the minorities.
That's the thing, Wallace's appeal was to disaffected Dixiecrats. These people were originally mostly Democrats because the Democratic party was the party of labor rights and the welfare of the common people vs. big business. But once the CRA was signed, their racism came into play as well, and opened up a second front of hatred.

The Age of Nixon talks about the kind of petty-bourgeois ressentiment that characterizes these people. It's also where America's proto-fascist tendencies are.