Many parents walked out with their kids, because of their religion
We played this movie at my theater back when it came out, and there were many walk outs. Not because it was a bad movie (it's not that bad, really. Nowhere near as good as part one, but not bad...)
No, they walked out because they objected to the movie due to their religious beliefs. I saw many parents dragging their crying kids out, mummering under their breath about how the movie was immoral. Blah, blah, blah.
One very memorable time was a mother, grandmother, and two kids who walked out half way through. The mother said "We need to have a talk..." and they sat on the bench outside the theater for a goof 20 minutes having a "talk."
It seemed these people didn't like how heaven was portrayed or how characters like Charlie were made into heroes.
Whatever.