This reporter's ambitious reconstruction of the Rodney King case presents a sobering image, not just of Los Angeles, but of judicial mayhem and political exploitation. Cannon (President Reagan: The Role of a Lifetime, 1991, etc.) was L.A. bureau chief of the Washington Post from 1990 to 1993. He repeatedly says that the beating of Rodney King was a Rashomon-like event in which every observer came away with a different perception of even the bare facts. Cannon's chronicle of the legal and political saga—from the night of the beating through the trial of the rioters who attacked Reginald Denny—is almost entirely drawn from the point of view of police officers. Within this particular framework, it is certainly authoritative, though the reader will almost always be nagged by a feeling of not having the whole story. He does show that the King incident was not representative of what it's like to be a suspect in the hands of the LAPD, and that only because it was videotaped did the world take it to be so. Cannon's masterful narrative, with tight control over its vast scope and incredible detail, overflows his own restriced frame, allowing readers copious material with which to weigh his implicit conviction regarding the innocence of the officers of the charges brought against them, and the LAPD's (and the judicial system's) broader guilt- -the ``negligence'' of the title (such as lack of training of police officers in the proper use of the baton to subdue a suspect). He creates an often complicated but always crystal-clear chronicle, seeming to recount years of turmoil almost minute-by-minute. Along with the major players, every juror and witness is introduced with extensive biographical background. Seemingly small legal issues and lawyerly subtexts of the trials are zealously pursued; by the time Cannon gets to the Denny trial, readers may be exhausted, but they will have achieved some clarity. As indispensable as it is incomplete. (Author tour)