There is an overwhelming support of it by United State's citizens, while a strong majority of people in other countries dissapprove.
And that's completly normal - it's easy to 'support human rights' and oppose drones when problem doesn't affect you directly. It's choice between risking life of American soldier and life of innocent Arab civilians. From (just example) French point of view killing civilians in war is bad. But why people in US should put those Arab civilians higher than their nationals?