There appears to be a bit of an uprising in Red Dead Redemption, some may call it a revolution. It's unclear from the trailer on which side the game's main character resides, but you can bet whatever side it is you won't want to be on the other.
The trailer provides the setting for the game, but also gives glimpses of what some of the cooperative play may be like. Gangs of cowboys on horses taking down trains? Check. Covering your friends from rooftops of the neighboring saloon? Check. Viva La Revolution tag line? Check.