Using violence in dramas does not morally endorse it

I don't understand the criticism here. It's depicting violence as being a very bad thing indeed. Why is it wrong to show how bad things can be ?

I would understand it if it was glorifying it in some way, but you'd have to have a serious mental health issue if you watch the show and think GoT is in any way whatsoever putting a positive light on sexual violence.

Originally shared by David Brin

George Martin has been slagged – and the directors of the Game of Thrones series – for depicting sexual violence against women.  George answers well in this interview.  But he does not drive home the point.  Which is: if you don’t like that kind of stuff, don’t romanticize the creepy-awful-horrid feudal way of life that trapped our ancestors – and especially women – for most of the last 10,000 years!

While the story and dramatization of Game of Thrones are vividly captivating, they should also cure anyone of actually wanting anything like feudalism to even begin to rear its head outside of fantasy flicks, ever again.  And yet, I run into romantics who claim they would like to live in such a world… or that of Tolkien, or Frank Herbert’s Dune… oy!  Dig it fools.  Herbert and Martin wrote these nasty worlds so that millions will be girded to oppose any sign (and there are signs today) of a return to such monstrously unfair societies!

You activists who decry vividly cringeworthy depictions of behaviors that were common in the past … you are not true paladins of progress.  You should be praising this art form. “Look at what used to be normal in other civilizations!” you should cry. “This is the kind of thing we must make, and we are now making, extinct. Now fight to make this never reappear outside of fiction.”
http://www.nydailynews.com/entertainment/tv/martin-defends-depiction-women-game-thrones-article-1.2246664