It’s been there for some time on the south side of the American Dance Institute building at the busy intersection of Greenwood Avenue and 80th.
I called the city’s Graffiti Rangers hot line, but learned all they can do is send a letter to the building owner to ask them to clean it up. The Graffiti Rangers crew only does battle on public surfaces.
A message has been left with the American Dance Institute to see what they know about it.
Regardless, cleaning brick is probably not going to be very fun.
UPDATE: It’s being cleaned now. The head of the institute had been travelling and just got back to approve the work.
