Hefty U.S. marshals guarded the entrances to Chicago's Federal Building, searching every package carried in and jostling anyone who did not move quickly enough toward the elevators. Other officers patrolled the aisles on the 23rd-floor courtroom. The black defendant sat chained to his chair by leg irons and handcuffs, emitting muffled obscenities toward the bench through a gag of muslin and tape. The jack-in-the-box jury scurried in and out of the chamber at the judge's direction, as outburst after outburst turned the proceedings into a bitter farce.
Dr. Benjamin Spock dropped by,...