Anyone hear of Birwood St. Wall to separate whites and blacks?

An interesting article in the Boston Herald about a wall built to separate whites and blacks along Birwood Street. I never heard of this. Wondering if this is well known? We always hear about 8 Mile or the border between Grosse Pointe and Detroit off of Jefferson. Never know about this. Have you?

http://bostonherald.com/news_opinion/national/midwest/2013/05/wall_that_once_divided_races_remains_teaches

Yes......and the back recesses of my brain are telling me there were two such critters around Detroit. Details are escaping me at the moment.

http://www.detroityes.com/mb/showthr...od-Street-Wall