Event started at 6, looks like about 80 people currently, I think there will be speakers and a march and the whole event will wrap up between 8 and 9.
There is a mural on Dearborn just west of I-5 with a picture of a forest labeled "Ceci n'est pas une forêt" ("This is not a forest").
I didn't get the reference until I looked it up:
https://en.wikipedia.org/wiki/The_Treachery_of_Images
The original painting, "The Treachery of Images" by surrealist René Magritte, shows a pipe with the caption "This is not a pipe" (i.e., it's not a pipe, it's paint!). The mural, by the artist Egeon, is an homage down to the exact same font, with the additional subtext that there used to be a forest there before there was a building.
TIL.