Six years ago or so, a rank horned bull jumped over the back of the bucking chute he was in and ran out into the hallway of Will Rogers Coliseum in Fort Worth under the seating area. He trashed a souvenir stand and hooked a woman spectator waiting for a beer. She wasn't hurt badly, but she sued the City of Ft. Worth (which owns the coliseum).
A guy on horseback finally caught up to the bull, roped him around the horns and dragged him back into the arena.
Wow... the guy on horseback was a brave guy.