People are taking photos of statues that cleverly make it look as though the statues are taking selfies.
There’s a group on Reddit but most of the photos really aren’t that good. There are more examples on Instagram, including this one and this one from June that predate the activity on Reddit. But the earliest instances I found of statue selfies were this Instagram photo from The Art Institute of Chicago and this tweet featuring the Statue of Liberty, both from December 2013.
Update: See also Museum of Selfies.