Here is an interesting tidbit.
I was looking at the old mural at the Denver airport with the fire and the city and I recognized the skyline of the city in the mural. It was the Chicago skyline with the Hancock building, except the artist reversed the skyline. It is my understanding that the Airport has since painted over the city in the mural. Some of the offensive murals have been completely covered. Some were altered or updated.
Here is a cropped image of the mural shown next to a reversed skyline of Chicago’s Hancock building which has a distinctive shape and design.