Saw it today finally (it wasn't sold out, about time, although it was still very crowded, especially considering it was 3:30 on a Thursday afternoon).
A few people walked out, although I can't remember when they left. Someone left as early as 20 minutes in, others around the hour mark, others with about 20 minutes left. Got applause from about 50% of the audience as well. Almost all ages and minorities were represented too.
As a film, it was extremely well done, and made pretty much in the way I'd make any op-ed piece. Lots of humor, and the "Afghanistan" parody was awesome. It relied a little too heavily on the preconception that people always do the worst possible thing though. Overall, an echoing of my personal sentiments and a very well-executed film regardless of on which side of the fence you sit.