The job was done swiftly and professionally. Dulcie September, 52, the Paris representative of the antiapartheid African National Congress, was about to turn the key to her office in a run-down building in central Paris last week when an assassin stepped up behind her and squeezed off six shots from a .22- cal. pistol equipped with a silencer. Several minutes later, a worker from a neighboring office found her lying in a pool of blood, dead of bullet wounds to the head. There were no witnesses, and because of the silencer, nobody even heard the gunshots.
From its headquarters in the...