Under consumer pressure, General Mills is going to make it's popular Cheerios cereal non-GMO. It isn't really that hard as Cheerios is an oat based cereal and oats is one cereal that has not been genetically modified. Cheerios did have to go back to 'cane' sugar shedding it's fructose corn sugar.
According to this article is USAToday, General Mills will not commit to either changing it's other cereals to non-GMO or labeling them accordingly.
There is little, if any, evidence that GMO foods is a danger to the public. However, I agree with those that put pressure on General Mills to at least label accordingly. There are other reasons to avoid eating today's highly processed cereals.