If television cops of the 1980s have changed from those of the '70s, the credit must go largely to two men. One of them, Steven Bochco, was the co- creator (with Michael Kozoll) of Hill Street Blues, the police drama that brought the genre a gritty new look, bustling narratives and a recognition that police officers are adults, not cartoon heroes. The other, Michael Mann, gave the formula another new twist a few seasons later with Miami Vice, which used flashy visuals and a thumping rock sound track to transform familiar cops-and-robbers tales into moody morality plays.
Crusading professionals are out...