In May 1989, Dwaine Tinsley stood at the summit of an unlikely career. The product of a broken, trailer-trash marriage, he was a high school dropout who had decided to become a professional cartoonist while serving a six-year sentence in a Maryland prison for burglary. As cartoon editor for Larry Flynt's notorious Hustler magazine, he had assembled a staff of pen-and-Wite-Out-wielding Lenny Bruces whose unprecedentedly offensive socio-sexual cartoons...