They’re at it again. The latest public rant against Michelle Obama’s effort to promote low-calorie school lunches was recently caught on tape in Alabama — the usual protest against the federal government meddling in local business. And then it quickly found its way around to the first lady’s posterior. “Fat butt Michelle Obama,” said Bob Grisham, a high school football coach who was surreptitiously recorded by one of his students. “Look at her. She looks like she weighs 185 or 190. She’s overweight.” Grisham, who was suspended Monday, is neither the first nor the most high-profile person to feel moved...