However, I wish to play upon their use of GMO chemicals versus turning to organic food grown from reliable sources (e.g. farmer's markets), not large corporations.
I was thinking of transforming the logo from MONSANTO to something subtle like MONSANTgmO with a photo of corn and a toxic symbol, or perhaps distorting the corn in Photoshop to not appear as edible. Alternately, I was considering changing the slogans to something like, "how can we squeeze more chemicals into Mother Nature's food?" or playing on their usage of "real American people" in their photograph campaigns.