No, that is not a message sent from the future by James T. Kirk, warning us to treat the whales nicely. You’re looking at 30 lit quadcopter robots forming a Starfleet insignia in the night sky above London, just because they can.
I don’t care that it is a publicity stunt. This is a great use of robots. The promotional event for the new Trek movie coincided with Saturday night’s Earth Hour, which was meant to encourage people to take one hour and to conserve electricity.
It’s totally okay to use electricity to make robots form a Federation symbol while others save it. I’m cool with that. It was an amazing once in a lifetime geek event. I wish I could have seen this up close and personal, as I’m sure the video doesn’t do it justice.