There is often a feeling of resignation that once crappy architecture is built, it cannot be erased. The 1914 book "Modern City Planning and Maintenance" by Frank Koester shows that crap can be defeated. Attached is a photo of 23rd Street in Manhattan, with stoops and porches encroaching onto the sidewalk. After the city Board of Estimate voted to restore standard width to sidewalks, the encroachments were gone. See- crap can be defeated!