They always have to throw in “white”. Trump energizes “Americans”. That includes “white”, “black”, “working-class”, “rich”, “poor”, ...
Maybe a higher percentage of “white working-class” citizens consider themselves to be “Americans” first while other groups consider themselves “black-american” or “gay-american” or whatever rather than “Americans”. But Trump is energizing the “Americans” in every group.
Yes. The “white” tells people wink wink if they support Trump they’re racist. Unfortunately it works for many foolish people.