On a sunny day in September, 1972, a stern-face, plainly dressed man could be seen standing still on a street corner in the busy Chicago Loop. As pedestrians hurried by on their way to lunch or business, he would solemnly lift his right arm, and pointing to the person nearest him, intone loudly the single word "GUILTY!"

Then, without any change of expression, he would resume his stiff stance for a few moments before repeating the gesture. Then, again, the inexorable raising of the arm, the pointing, and the solemn pronouncing of the one word "GUILTY!"(1)

Members of the lunch hour crowd would stare as they passed by at the strange performance. They would stop for a moment, look away, glance at each other, look back at the man, and then hurry on their ways. One man, turning to another, exc…