Sure you can be a casual PK Dick fan and just read his best known work ("Do Androids Dream of Electric Sheep?", "Minority Report," "A Scanner Darkly"), but that's really only scratching the surface of one of the most prolific, visionary, and influential of sci-fi authors. 1960's "Vulcan's Hammer" imagines a world in which a computer runs the world and machines declare war on humans. Pulpy and paranoid, Dick's novel presages so many of the-robots -are -taking over films ("The Terminator" series) and books ("Robopocalypse") that would follow.
"It's hopeless to imagine that a grass-roots revolutionary movement can overthrow a modern bureaucratic system that's backed up with modern technology and elaborate industrial organization."