Oh, I get it, I had a woman walk out of Waterworld before because she could not believe of something so violent being shown to kids.  I get it, but then obviously you are at a theme park that you had no clue what you were getting yourself into.  USH is a very violent theme park if you look at it.
I have worked for airlines, and when people fly as tourists, airplane crashes can be a very sensitive subject.  There are many people who have no or little knowledge of air travel and its fearful in the public eye.  I can understand it having witnessed aircraft crashes myself and seen the aftermath of people directly effected.