Popular Culture and the Movie, "America: Imagine The World Without Her"

I expect this will be typical of others who even discuss the movie at all. The movie reporting web site, IMDb had a short review of the movie "America: Imagine The World Without Her," in a report titled, "Lionsgate to Distribute Controversial Documentary ‘America: Imagine a World Without Her’""Controversial," right? I defy anyone to watch the movie and describe what is "controversial" about it, other than the fact that it contests the popular