[Elizabeth Joh, law professor at the University of California, Davis] said she was worried that the decision by police to use robots to end lives had been arrived at far too casually. “Lethally armed police robots raise all sorts of new legal, ethical, and technical questions we haven’t decided upon in any systematic way,” she said. “Under federal constitutional law, excessive-force claims against the police are governed by the fourth amendment. But we typically examine deadly force by the police in terms of an immediate threat to the officer or others. It’s not clear how we should apply that if the threat is to a robot – and the police may be far away.” That, Joh added, is only one condition for the use of lethal force. “In other words, I don’t think we have a framework for deciding objectively reasonable robotic force. And we need to develop regulations and policies now, because this surely won’t be the last instance we see police robots.”
How is this situation ethically or legally different from taking out a criminal with a sniper?