technology is taking over

Just a random thought as I watch a movie Sunday afternoon. Have you ever noticed how many movies are out there showing the world being taken over by technology? Computer chips being implanted in human brains to control people and create sleeper cells. Is it really science fiction? Are we afraid of our own developements or are we just warning ourselves what could be if we abuse what we develope. These scare tactics could hinder future technology. If Einstein thought his discoveries would someday lead to the nuclear bomb would he have published them or destroyed them?