It was an unfortunate juxtaposition but one the Cain campaign really should have seen coming. In case you haven't heard, Herman Cain's tax plan includes a sales tax on everything but used goods. During a report I heard today, an economist pointed out how regressive the plan was, in part, he said, because poor people spend a disproportionate part of their income on food (which is taxed under the plan). The report then had Cain challenging the complaints about his plan hitting the poor the hardest by saying they could change their behavior and buy more used things.
Insert Godfather's Pizza joke here.