Trayvon Martin

George Zimmerman's weapon was removed from the GunBroker.com website for unknown reasons just before the bidding was due to start.

George Zimmerman has offered people the chance to "own a piece of American history" - a gun used to kill an unarmed 17-year-old.

The president opened up about the forms of racial discrimination he experienced as a young man and said: 'I could have been Trayvon Martin.'