What about robots in the law enforcement field? How would that take off? I've seen the Will Smith movie about it, but have to imagine that's not likely. I think even if it were, we would still need human detectives to solve murders and things of that nature.
South Korea already has robotic prison guards that have been programmed to recognize suicide attempts, fights and other human behaviors. They make security rounds by way of GPS points along the halls and alert staff in a control room by way of audio/visual cameras. Not sure If true but I heard they had alarm sirens and could administer pepper spray in the case of emergencies. They look like a big R2D2.