Robots hit the streets -- and the streets hit back

As robots begin to appear on sidewalks and streets, they're being hazed and bullied. Last week, a drunken man allegedly tipped over a 300-pound security robot in Mountain View, California. The incident kicked off a spree of cheeky, only-in-2017 headlines: "Armless robot loses fight to drunk man" and "Security robot beat up in parking lot, police say." If a robot is getting hassled in the heart of Silicon Valley, what happens when machines venture outside friendly territory? The robotics era is beginning.