Hundreds of supporters have gathered in Atlanta, Georgia, to try and stop a convicted killer being executed.
The campaigners held a vigil, calling on officials to spare the life of Troy Davis, who pleads his innocence. He is set to die by lethal injection on Wednesday night.
Davis was sentenced in 1991 for killing an off duty policeman, but his lawyers have long said he is a victim of mistaken identity.
His conviction for the murder of Mark MacPhail has been questioned because seven of nine witnesses have changed or recanted their testimony.
Prosectors insist they have the right man.
On Tuesday, a Pardon Board rejected a last-ditch call for clemency.
Davis’ execution has been delayed three times, but his fate now looks more certain.