Wm. Gibson, Virtual Light. I'm about 9/10 of the way through this novel written in the 1980's, but I'm continually impressed at how prescient it is: people wearing masks to avoid the various "viroids" in the wake of variants of HIV that plague the population; a breakdown of the integrity of the US into smaller states after a major conflict/upheaval. Also, there is the common theme of the usual post apocalyptic disorder, including multiple layers of private security and police companies, most of which are corrupt, computer hackers, Japanese real estate investors altering the physical landscape, a rotting Bay Bridge with multiple levels of ad hoc squatter dwellings on it, heroic computer hackers and others living off the grid. Also, multiple weird religious sects, many fundamentalist, run by the usual charlatans.
Much of the general structure of the plot is predictable and not especially different from normal policiers/hard bitten rogue cop on quest for justice type books, but it's still been an entertaining read.