Robots are increasingly having to protect themselves from people after a rash of destructive incidents. The behavior can come in the form of a loud screech, a polite request to get out of the way, or shivers, so people will feel sorry for them. This is the robot with the loud screech, K5 , who is currently patrolling malls, parking lots and schools. After its screech, kids who were trying to block it go running away. Hitchbot , a robot trying to make it from coast to coast, didn't and was