Dean Hoffman wrote

A man put up a manure fence on the boundary line. It's cattle manure.
I didn't think cattle manure is that bad compared to hog manure.
https://www.fox2detroit.com/news/man-builds-poop-wall-in-washtenaw-county-after-dispute-with-neighbor

Sort of turns the thin blue line on its head.

They have a thick brown smelly line instead.