The accused murderer of unarmed Florida black teen Travyvon Martin took to the stand on Friday and apologized to the victim's parents in a racially charged case that has shocked America.
"I am sorry for the loss of your son. I did not know how old he was. I thought he was a little bit younger than I was. I did not know if he was armed or not," George Zimmerman, who has admitted the shooting, told a bond hearing.