Oh my! My poor wee mammy practised Kant without even being aware he had a theory! (So, ok, all your pals want to jump off a cliff...
Try applying the Kantian rule 'what if this behaviour became universal?' as a basic criterion for deciding whether an action is socially acceptable or ethical. Look at it this way: consider how many people take photos on their phone. Now consider if all those people were using drones instead. Consider what the Praça de Obradoiro would be like if even a tenth of the people there were using drones.
I would reply with an answer given in "Catch 22" ( not an exact quotation) "If everybody is doing it, I would be a fool if I did not"