As of now, more than one million people have signed the petition that you will find at http://www.1billionhungry.org/

If you are mad as hell, if you “find it unacceptable that close to one billion people are chronically hungry” then sign the petition. Its aims: “Through the United Nations, we call upon governments to make the elimination of hunger their top priority until that goal is reached.” The more the political pressure, the more governments will have to do more to end hunger.