Lisa DeMoraes thinks it’s absurd to assume that the election of Barack Obama will cause Hollywood to start putting more black actors in leading roles. But she sees a glimmer of hope in CBS’s decision to elevate Laurence Fishburne to the lead in one of its signature dramas. “The bad news about the TV industry is that it assumes a failure is an indictment of the idea, when it’s usually just an indictment of the show.”