...there was Go Go.
A preface: as "A Reader" so bluntly pointed out, street art and graffiti in particular are not well received by the general public. It's simply ignorant to equate graffiti taggers with "muggers" because in no way shape or form is an inanimate object like a wall the equivalent of a human being. "By all means buy this book if you want to glorify the meaningless of talent wasted by tag". It's all subjective. If you're the type of person who is interested in geographical currents in street art then buy this book.
The unsung heroes of DC's graffiti scene of old get a little less ephemeral treatment. Essentially - if you're on this page reading these words, then you probably have already made up your mind.