A culture that redefines food choices as moral issues will demonize the people who don’t share the tastes of the priest class. A culture that elevates eating to some holistic act of ethical self-definition - localvore, low-carbon-impact food, fair trade, artisanal cheese - will find the casual carefree choices of the less-enlightened as an affront to their belief system. Leave it to Americans to invent a Puritan strain of Epicurianism.
We've had enough of the food fascists ourselves, and so has Professor Reynolds:
Let me be clear. These people are not well-meaning do-gooders who have just gone a bit too far. They don’t actually “mean well” at all. They don’t mean well, they mean to be in control. They are power-fetishists, drunk on the joys of bossing the little people around. They are not good people. They are evil. They should be ashamed of themselves, but shame — like taxes — is for the little people.They don't like you.