Protesters have gathered in Dayton, Ohio, to call for a federal probe into the fatal police shooting of an African-American man in a Beavercreek Wal-Mart. Police say John Crawford ignored commands to drop a gun, which turned out later to be a BB gun he had picked up from a shelf. But an attorney for the family of Crawford says surveillance video, which has not been released publicly, shows Crawford was leaning on the butt of the gun while talking on a cellphone when he was “shot on sight.” Ohio’s attorney general has assigned a special prosecutor to investigate the case.