Internet giant Amazon was urged by a worker advocacy group weeks ago to give workplace safety its urgent attention. After a bear spray can fell off a shelf and discharged at an Amazon warehouse in Robbinsville, sending two dozen workers to the hospital, The National Council for Occupational Safety and Health said the company needs to do a better job moving products without hurting people. "The company keeps saying that safety of workers is their ’top priority," Marcy Goldstein Gelb, the group’s co-executive director, said. "The tens of millions of consumers who will spend money at Amazon this holiday season have a right to ask: ’If that’s true, why do people keep getting hurt, injured and killed at Amazon facilities?’"