Bill Cosby on Trayvon Martin shooting: ‘Power-of-the-gun mentality’ to blame | Respected comedian Bill Cosby weighed in on the Trayvon Martin shooting in an interview with the Washington Times’ Deborah Simmons. “We’ve got to get the gun out of the hands of people who are supposed to be on neighborhood watch,” said Cosby. “Without a gun, I don’t see Mr. Zimmerman approaching Trayvon by himself. … The power-of-the-gun mentality had him unafraid to confront someone. Even police call for backup in similar situations. When you carry a gun, you mean to harm somebody, kill somebody,” he said.