No, you aren't seeing double. Grand Theft Auto V had one sequence so violent we have to acknowledge it separately: a torture scene. It includes waterboarding, electricuting, knee breaking and more. A number of advocacy groups came out against the scene, and this was aside from all of the usual violence in a GTA game.
Fun Fact: Under the right circumstances in GTA V's multiplayer, you can make Red Dead Redemption's John Marston your grandfather.