Don't look now, we're being watched!

People who know me, also know I'm a bit of a techie. I have seen a few of these drones around and often thought that I would perhaps like to own one in order to take photos from a high vantage point, which also ties in with another of my hobbies 'Flight Simulation'. Never got round to buying one though as I thought its use my be misconstrued. I've never seen one in a city centre hovering next to their greatest and most important building before and therefore wonder what or who is it filming? Ah well, such is the modern world! ps the building is the National Capitol Building of Havana, Cuba.