There's no campaign against this film. The Wiesenthal Center is particularly interwoven into the fabric of Hollywood. Since the center's inception, its fund-raising operation has drawn heavily from the film community. The center also has a film division, Moriah Films, devoted to producing documentaries about Jewish history. We have the right to expect that people should act responsibly, but if at every minute we're going to do that kind of thing, we cross the line of the First Amendment.
Most movies are entertainment.
My interpretation of what happened is that the studio determined that the upside of the movie in no way equaled the potential downside. Maybe a few million bucks. The downside was the studio gets smeared with some horrible reaction from Jewish organizations.