Wojtek, you mean "U.S. trash who are whites." "White" is merely descriptive, and "trash" is good. But "white trash" is an established, specific American derogatory idiom meaning "uneducated poor white people with bad teeth who live in trailer parks." The way the idiom is used, a guy with income at, say, the 55th percentile, who owns a house in suburbia (rather, make mortgage payments) and drives a recent-model SUV is NOT "white trash" even if he conforms in every detail to your description. Neither are any millionaires at all ever described as "white trash," not even for example Bill O'Reilly, who happens to be white and who definitely _is_ trash.
You described a subset of U.S. voters in that quote, and as the name you chose for this subset is already taken, for lack of a better term in this discussion let's call them "jerks." "Jerks" are not co-extant with "white trash"; also I think they make up only maybe a quarter of the electorate overall, not half. I don't even think the percentage of "jerks" among "white trash" is any higher than their percentage among people in the 40th through 80th percentiles of income. The proportion of "jerks" is alarmingly high among the very wealthy too, who lack the excuse that they've been too poor all their lives to get educated. True, "jerks" are under-represented in academia, so you in your career can be more uniformly fortunate in your acquaintances than I, a construction worker, am.
As "white trash" have the most to gain from any increase in socialism (hey I can dream can't I? single-payer health care, yeah!), they are also an American socialist orator's most natural audience. Also, some of them are actually not completely stupid!
Yours WDK - WKiernan at concentric.net