In the original Day the Earth Stood Still, there was a robot named Gort. An interplanetary organization created a police force of robots, and he was one of them. It’s now a thing on earth, especially in Tokyo.
They’ve deployed security robots inside government facilities and office buildings. They’re not very menacing. They look like tall Roombas . . . but you gotta start somewhere.
See the future come to life IN THE VIDEO HERE!