Is it the remote control that makes robots scary, or the autonomy? My belief is the latter. I don't think there is much difference between this and shooting someone, so long as there is still a person controlling the robot and pressing the button.
Not the first time, way back in 2000 in Los Angeles it seemed a robot killed a suspect when the force of the door it blew open hit him and killed him <a href="http://articles.latimes.com/2000/nov/21/local/me-55085" rel="nofollow">http://articles.latimes.com/2000/nov/21/local/me-55085</a>
I'm really glad it wasn't just me who noticed and was creeped out by this. We've officially crossed the line of executing a US citizen on American soil with a drone now.