NPR's Richard Gonzales reports that the city of Sacramento is embroiled in a bitter dispute over sidewalks and whether they have to be overhauled to accommodate the disabled. Disability rights activists say the city has violated federal law because its sidewalks are full of benches and poles and other obstacles. The Ninth Circuit Court of Appeals has agreed. Sacramento says federal law does not require the city to fix existing walkways. It has appealed for a hearing before the U.S. Supreme Court. Cities around the country are paying close attention.