MIAMI (AP) - Websites are hawking key chains bearing Trayvon Martin's likeness. Vendors are selling T-shirts and hoodies at rallies.

The case of the slain Florida teenager is quickly turning into an Internet-fueled brand.
    
Buttons, posters, T-shirts and hoodies are up for grabs on Ebay since Martin's shooting last month.
    
Martin's parents have trademarked two phrases - "Justice for Trayvon" and "I Am Trayvon." An attorney says the family wants to prevent others from exploiting the 17-year-old's image.
    
The unarmed black teen was shot in the central Florida city of Sanford by a neighborhood watch volunteer, who hasn't been charged and says he shot Martin in self-defense.

The U.S. Department of Justice and a special prosecutor are investigating.