The hooded sweatshirt has become an unlikely but potent symbol since the shooting of Trayvon Martin. Fox's Geraldo Riviera went so far as to say that wearing a hoodie might have contributed to Trayvon's death last month. But for the organizer of the "million hoodie march" in New York, and for many young black men in Florida, wearing a hooded sweatshirt has become a form of protest against racial profiling in the wake of Trayvon's shooting. NPR's Joel Rose reports.