Good Citizen Training

Do you try to train your horses to be good citizens?  It's been a slow weekend, so I've had some time to really observe my horses and I was shocked to see how rude they are to each other.  Some might say that I am projecting human behaviors onto horses, but that's all I know.  I've still got a lot to learn as far as herd mechanics or the sociology of horses goes, but there are some behaviors I