Robotic police dogs: Useful tools or dehumanizing machines?

The handful of police officials experimenting with the four-legged machines say they’re just another tool, like existing drones and simple wheeled robots, to keep emergency responders out of harm’s way as they scout for dangers. But privacy watchdogs — the human kind — warn that police are secretly rushing to buy the robots without setting safeguards against aggressive, invasive or dehumanizing uses.