Examines the evolution of an undervalued urban space and how conflicts over competing uses--from the right to sit to the right to parade--have been negotiated. Urban sidewalks, critical but undervalued public spaces, have been sites for political demonstrations and urban greening, promenades for the wealthy and the well-dressed, and shelterless shelters for the homeless. On sidewalks, decade after decade, urbanites have socialized, paraded,...