The photos and video over the past few days in Chicago have been remarkable -- from the Irving Park on the North side, to Chicago's iconic Daley Plaza to the far South Loop, demonstrators have gathered in concert with the NATO summit to express their views on a host of local, national and international public policy issues. In most of the photos and videos, there are a group of people keeping a watchful eye, clad in bright orange t-shirts and hats. These folks are not fans who have wandered away from a University of Illinois, Urbana-Champaign football or basketball game (the school's colors are bright orange and blue).