Most of the stuff listed is base human, nee animalist, behavior and not uncommon in the feudal setting of the show. It's gratuitous and I take as that as its intended purpose.
The things I found most disturbing, other than every appearance by Robin, was the general treatment of Sansa by Geoffrey. It went beyond the "pulling the wings off of insects" analogy that I think GRRM was going for and crossing into Silence of the Lambs/Saw type manipulation. The other event was the red wedding, which again went beyond the Italian restaurant scene from the Godfather, in it's departure from civilized behavior.
Of course, there is the sheer volume of rape.