Fallows rightly flags Newt Gingrich continued labeling of Obama as "the food stamp president" as a doq-whistle and gets this from a reader:
You cited as a "dog whistle" Newt Gingrich's comment that Obama is "the food stamp President". By calling that a dog whistle you are dog whistling to your own constituencies about how terrible and racist those evil Republicans are.
...Newt Gingrich knows exactly what he is doing when he calls Obama the "food stamp" president, just as Ronald Reagan knew exactly what he was doing when talking about "welfare Cadillacs." There are lots of other ways to make the point about economic hard times -- entirely apart from which person and which policies are to blame for today's mammoth joblessness, and apart from the fact that Congress sets food stamp policies. You could call him the "pink slip president," the "foreclosure president," the "Walmart president," the "Wall Street president," the "Citibank president," the "bailout president," or any of a dozen other images that convey distress. You decide to go with "the food stamp president," and you're doing it on purpose.If Joe Lieberman had been elected, I would be wary of attacks on his economic policy that called him "the cunning, tight-fisted president." If Henry Cisneros had or Ken Salazar does, I would notice arguments about ineffectiveness phrased as "the mañana administration." If Gary Locke were in office, then "the Manchurian candidate" jokes that had been used on John Huntsman would have a different edge. And so on.