"What's that about?" -- I'd suggest you read NASA/TREK, by Constance Penley, which outlines that one of the only tools humans have to deal with sudden trauma is to work through it via repetition. Much like children who witnessed the Challenger's explosion in the 80s played with "realistic exploding space shuttles" (actually marketed as such), that contemporary artists and filmmakers would return to the site of one of the most over-televised traumas of current history makes perfect sense. All the repeated news footage did not allow anyone the opportunity to vitally work through; instead, it merely re-represented. When people control the circumstances of reproduction is when they can make significant inroads into processing and overcoming the trauma.

Well said, eliazar. I could add to it, but there is no need; you've got it. Many of the posts here in The Fray are more astute, interesting, insightful, and intuitively correct than the actual reviews.