As the YouTube comments revealed, several of the viewers of Joel Gilbert’s “The Trayvon Hoax” had grown up thinking of Trayvon Martin’s death the way their grandparents thought of Emmett Till’s, two innocent adolescents killed for the crime of being black. They had no idea that Martin, a skilled street fighter a half-foot taller than Zimmerman, gratuitously attacked the neighborhood watch captain. Nor did they know Zimmerman was an Hispanic civil rights activist and Obama supporter.