"Redacted" is a shattering, powerful experience. It has been criticized by some as painful to watch...but I think that is the point entirely.
For too long, Americans have been spoon-fed a steady diet of lies about the Iraq War (not least about why we invaded that nation in the first place).
De Palma aims to shows us another side to this terrible conflict; one that we won't get on Fox News (or any of the other corporate propaganda networks). It's about time Americans got another point of view on Iraq, because we're hopelessly misinformed about what's going on there (an astonishing number of Americans including a majority of Fox News viewers STILL believe to this day that Saddam was behind 9/11). My friends in Europe don't believe me when I tell them this.
Incidentally, I don't think a film has to be pleasant to watch to be a memorable cinema experience. For example, Fassbinder never made a "entertaining" film, and yet his movies are among the most powerful in all of cinema.
The Iraq War is a horror story of untold magnitude. This film aims to capture the nightmare of the ever-shifting, chaotic Iraq battlefield. It's a film that will be hated, in knee-jerk fashion, by the Bush worshiping nut-case right-wing fringe. But for the rest of us, it's a must-see, powerful and brave film.