… or are they?

In case you didn’t get it, the Greenpeace advertisement targets climate change. 

The caption reads: “A few more degrees can change the story” – referencing the frozen ‘White Walkers’ from popular TV show Game of Thrones.

All the Night’s Watch needs to do to get rid of the blue-eyed icy killers is to start an industrial revolution, install a few air conditioners and do what regular humans do.