Compared to surveillance of the internet and phone calls drones don't pose much of a threat to privacy. It's technically difficult to recognise people from aer

Compared to surveillance of the internet and phone calls drones don't pose much of a threat to privacy. It's technically difficult to recognise people from aerial photos, although when combined with mobile phone geolocations and unlimited access to personal metadata that would be possible. There are also entirely legitimate kinds of drone surveillance, such as land surveys, detecting diseases amongst crops, monitoring livestock or shipping or general environmental monitoring (temperature, atmospheric gasses, etc).