The plaque on the vault where Trayvon Martin rests is shown at the Dade North Memorial Park cemetery Friday, March 23, 2012, in Opa-Locka, Fla. The plaque is temporary. Martin was slain in the town of Sanford, Fla., on Feb. 26 in a shooting that has set off a nationwide furor over race and justice. Neighborhood crime-watch captain George Zimmerman claimed self-defense and has not been arrested, though state and federal authorities are still investigating. (AP Photo/Alan Diaz)
A memorial for Trayvon Martin sits on display outside The Retreat at Twin Lakes neighborhood in Sanford, Fla., Friday, March 23, 2012. Martin was slain in the town of Sanford, Fla., on Feb. 26 in a shooting that has set off a nationwide furor over race and justice. Neighborhood crime-watch captain George Zimmerman claimed self-defense and has not been arrested, though state and federal authorities are still investigating. Since the slaying, a portrait has emerged of Martin as a laid-back young man who loved sports, was extremely close to his father, liked to crack jokes with friends and, according to a lawyer for his family, had never been in trouble with the law. (AP Photo/Roberto Gonzalez)