In the area East of the United Center on Madison Street they are running traps in the cross walks. At night the police car waits on Loomis, south of the intersection with Madison, while they have two black men dressed in black, one on the N. corner sidewalk of Madison and Loomis and one standing on the median sidewalk. As cars go by a police car or two rushes out around the corner onto Madison and stops 3-4 cars at a time for violating the crosswalk; even though there is no one actually in the cross walk.