I work closely with the City of Englewood in Colorado. In 2009 the city brought suit to a local business owner for the mural on his building. He contacted the ACLU who represented him in court and won the case under freedom of speech. 

I’m attaching the current mural policy language that’s within the sign code and a link to the court case and an article that was in a local paper. 

I hope this information is helpful!

Best,

Tim