Movie theater etiquette can be quite divisive. A lot of movie-goers appreciate a quiet theater. But then, the general public enters. Some people clearly do not want to be at the movie at all, and they show this by being on their phones for the entire run time. Some people bring their kids, who insist on using their iPads or running up and down the aisles. And then sometimes groups of teens come into the movie, and since they're just kids, they don't really care about the movie experience of the…