They came to testify, but ended up throwing punches when a brawl broke out outside a Florida courtroom.
The witnesses were there for a hearing in a "Stand Your Ground" case.
That's Florida's controversial law allowing people to use deadly force when they feel a reasonable threat of death or serious injury.
This case involves a killing outside a night club in St. Cloud, Florida last year.
After Monday's hearing was canceled, the punches started flying.
Officers at the courthouse stepped in and arrested several people.
One man who was arrested left on a stretcher with a possible broken jaw.
An officer was hit in the back of the head during the fight.
Watch the second half of the video to check it out in slow motion.