Fla. teen Trayvon Martin killed by neighborhood watch volunteer

Unarmed 17-year-old Trayvon Martin was slain in the town of Sanford, Fla., on Feb. 26 in a shooting that has set off a nationwide debate over race and justice. Alleged shooter and neighborhood watch volunteer George Zimmerman was charged on April 11, 2012 with second-degree murder and has claimed self-defense in Martin's death. Martin is seen here in this undated family photo.

Martin is seen here in this undated family photo. Protesters around the country have donned hoodies in solidarity with Martin in reference to the one he was wearing the night he died.

In this undated family photo, Trayvon Martin holds an unidentified baby.

George Zimmerman, 28, is seen here in an undated mugshot provided by the Orange County Jail.

The family of the black teenager fatally shot by a neighborhood watch volunteer arrived at Sanford City Hall Friday evening March 16, 2012 to listen to recordings of 911 calls police previously refused to release. Police agreed to release the recordings earlier that afternoon. Officials are allowing the family of 17-year-old Trayvon Martin to hear the recordings before making them public. Martin's parents previously sued to have the recordings released. A hearing for the case was scheduled for Monday.

Trayvon Martin was fatally shot last month as he returned to a Sanford home during a visit from Miami. His parents, Tracy Martin and Sybrina Fulton, accused Sanford police of botching the investigation and criticized them for not arresting 28-year-old George Zimmerman, who says he shot Trayvon Martin in self-defense. Martin was not armed. They say the police department hasn't arrested Zimmerman because he is white and their son was black.

Trayvon Martin, left, is seen here in this undated family photo with his mother, Sybrina.

Myrtle Hudson marches towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death.

Phoebe Denson marches towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death.

People march up South Street towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death.

Roni Houston McNeil shouts during a march towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer. No charges have been filed in the February death.

Rev. Glenn Dames, senior pastor at St. James AME Church, right, leads people towards the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer.

A recent rally was held in Florida demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer.

Rev. Glenn Dames, senior pastor at St. James AME Church, leads people in a prayer at the Titusville Courthouse on Sunday, March 18, 2012, in Titusville, Fla. A rally was held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer.

A rally was recently held demanding justice for Trayvon Martin, a black Florida teenager fatally shot by a white neighborhood watch volunteer.

Here is the program to the funeral service for Trayvon Martin, which was held on March 3, 2012.