Thanks to Science, Nasa, Google and Humans, this image was taken during the inauguration. At first I thought it was an ant swarm, or perhaps a cell cluster*, however I was mistaken. It is a formation of Homo Sapiens gathering around their outdoor televisions and their obelisk.
Click here for more satelite images of the inauguration- they are all pretty trippy.
*I don't know what a cell cluster is but it sounded like something that might be real, and maybe look like the picture.