Food giants such as the Grocery Manufacturers Association, Kraft Foods, Coca Cola and General Mills are mobilizing to counter the power of the growing grassroots movement across the U.S. to have GMO foods labeled, and are getting ready to battle what they see as an “unprecedented period of turmoil” for GMO corporations.

In a letter seen by The Hill, the Grocery Manufacturers Association (GMA), who will be holding the summit of food industry corporate giants next Wednesday in D.C., told their 300 prospective attendees that they have “reached a pivotal point” in the GMO effort and “believe now is the time” to act in unison against the movement to label GMOs.

However, exactly what steps the food industry will plot is yet to be told, The Hill notes:

There are currently proposals to label GMOs pending in 25 state legislatures and a ballot initiative in the works in Washington, but the food industry has shown it is willing to fight dirty in order to keep mandatory labels off.