I have seen the movie. I think it pretty accurate. The companies like Tyson and Monsanto have a goal of making as much profit for the share holders as possible, just like any other company. Putting them in charge of the building blocks of life like the SCOTUS has done is not only dangerous, it is immoral.
What happened with the SCOTUS allowing the patenting of GMO's has enabled Monsanto to produce a seed that looks good to the farmers at first (higher yield per acre) but in the end Monsanto wins and here is why. Because of the higher yields per acre prices will drop forcing the farmers to look for more ways to produce more per acre than the previous year, just to stay profitable. This starts a never ending cycle of being dependent on GMO seeds produced by Monsanto to sustain yield levels. So Monsanto is like the pusher that gets kids hooked on drugs. The farmers are hooked and have a hard time getting off the GMO seed due to decreases in yields if they do.
The natural drifting of seeds has occurred since the beginning of time. Now Since Monsanto owns the patent on the GMO the are going after farmers that have broke no laws. there have been many cases of farmers loosing nearly a life's work because their neighbor uses GMO and the seeds drift into there property and then you have a lawsuit.
Did you ever notice that home grown tomatoes are different than Kroger tomatoes? GMO at work. Not only do they look different, they taste different and the nutritional yields are not even close. I would suggest a book called Empty Harvest http://www.amazon.com/Empty-Harvest-Bernard-Jensen/dp/089529558X if you want to learn more about the deficient nutritional status of our foods.
While I am on a rant, the nutritional deficiencies of our food supply is one of the causes of obesity in the USA. The foods contains less actually nutrition but yet contain more calories. This sets up a situation where more volume of food must be consumed to get the same amount of nutrition.
My.02