Here's a radical thought. If you don't like what they sell in your supermarket, don't buy it. Buy the things you do like.
I discovered this fun little flash movie on a blog at This Magazine, a leftish Canadian magazine. It is a parody of Star Wars that pits the organic rebellion against the dark side of genetic engineering, irradiation and chemical pesticides.
I am sympathetic to their goals and would be more than willing to pay a small premium for organic foods and produce. However, I refuse to pay double for the wilting stuff I often see in the produce section at supermarkets and health food stores. I wish them success in their campaign.