Last September, Geoffrey Owens, the actor best known for his role as Elvin Tibideaux in the Cosby Show, was photographed bagging groceries at a Trader Joes in New Jersey. Suddenly, he was famous again. And not in a good way. The photo tumbled across the internet and generated hundreds of unkind comments and insults toward Owens. Rapidly actors locked arms to defend Owens, to denounce “job shaming,” and to reflect on the value of work.…