Bill Cosby: Trayvon Martin case is about guns, not race WASHINGTON - Actor and comedian Bill Cosby says the debate over the killing of Trayvon Martin by a neighborhood watch volunteer should be focused on guns, not race. In an interview on CNN's "State of the Union" aired Sunday, Cosby said calling George Zimmerman a racist doesn't solve anything. Cosby says the bigger question is what Zimmerman was doing with a gun, and who taught him how to behave with it. The shooting of the 17-year-old Martin on Feb. 26 has ignited a nationwide debate about race and self-defense. Cosby said during the interview, which was taped Thursday afternoon, that he once owned a gun but no longer does. He says there is a need to get guns off the streets, and that people should be taught to use every possible alternative before shooting someone.