Rik Yeames is a member of the Greater Concord Interfaith Council (a URI Cooperation Circle based in Concord, New Hampshire, USA), and the founder of "A Piece of Pizza for Peace."
See the video above, which explains this idea and how it got started. Every September 21, on the United Nations International Day of Peace, local pizza shops give all the proceeds from their slices to charity. It's "A Piece of Pizza for Peace!"