I think the 5-minute-long intro song gives a clue as to the time you would waste watching this movie. It's disjointed, awkward, and dull. I enjoy Tilda Swinton's acting in all of it's quirky glory; however, in this movie, it doesn't even feel like she's acting. It's more like "Tilda Swinton plays Tilda Swinton in a boring, poorly made documentary."
I generally enjoy odd quirky films, but this one doesn't accomplish anything interesting. I think I know what the director is trying to convey (the juxtaposition of the banality and horror of murder) but it's done in such a clumsy way. It doesn't hold my attention. I say this as a person with a long attention span for documentaries and films.
The short version of this review is: don't bother.