This article (http://www.businessinsider.com/we-seriously-need-to-stop-calling-them-all-drones-2013-9) is arguing that we should stop calling all UAVs drones. The author of the article argues that because we use drones for other purposes besides killing people, like delivering food, we should think about calling drones something else like "robots".
It seems kind of silly. Cars kill people and other things. Guns kill people and other things. Animals (like sharks) kill people and other things. No movement to change their names.