The confrontation of demonstrators and Chicago police in front of the Conrad Hilton Hotel was seen by millions of Americans on TV and recorded for others in newspapers and magazines across the nation. The club-swinging, the obscenities, the mindless violence shocked the world. Here are the facts behind these events. Based on over 3,000 statements of eyewitnesses and participants, careful study of miles of film and 12,000 still photograph, here is the truth what really happened in Chicago.