@glitterbag,
The girl scout who lives with me is 13 now. There is a big difference between an 8 year old and a 10 year old.
I think it is pretty normal for preteens to "clamor" for violent movies. My daughter has been drawn to some pretty violent anime for the past few years. It is a challenge for a parent to know where to draw the line... but there is no question that many preteens want this type of material.
One of my daughter's favorite animes is called "Death Note". It is pretty dark stuff. It deals with murder and lust for power. The story is a boy who is given the ability to kill (i.e. murder) any person, simply by writing down their name in a demonic notebook. He can specify the nature of the death as well. He starts out killing for justice, people who deserve it, but the story is really about consequences and the corruption that comes with absolute power. My daughter is certainly old enough for it in that she understands the story and can discuss intelligently the point that power comes with consequences.
A couple of years ago, her aunt bought my daughter a "Death Note" notebook and quill (marketed with the show). I was not quite sure it was appropriate. My daughter thought it was funny and appreciated the gift.
My point of this rambling is that yes... many people, including preteens and teens really enjoy stories about violence, or sexuality. The question for adults is what is appropriate at what age... there is a difference between
Austin Powers and
50 Shades of Grey.
When my sons were teens, I made some bet with them (I forget if it was grades or something else). If they succeeded, I would take them to a movie. They thought it was hilarious to drag me to
Jackass 3D. This is a completely tasteless, immature movie... it delights in going to the depths of bad taste.
Here is the problem, it was hilarious. I enjoyed it in spite of myself as excrement was flung, a little person was super-glued to a large hairy man, and people were repeatedly hit in the groin. My sons kept saying "dad, you are laughing" and I kept denying it... but I couldn't help myself. It low-class and briliant.
I am not the only person who felt this... Jon Stewart also loved it (I was very happy when he said this)
Low brow humor and bad taste are enjoyable.