Not all JW's will act out that way. I spoke with my mom this afternoon and asked her if she heard about the upcoming Dateline segment. She didn't so I filled her in a bit.
She said she and my dad (an elder before he passed away recently) had talked about this a few times and she disagreed with the Organization's stand on handling things internally. She feels that not only should it be reported to the police, but there should be an announcement made at EVERY Kingdom Hall that person ever goes to.
Of course, being just a "sister" she didn't have much say, she doesn't like the current policy but doesn't see how she could do anything to change it - she still believes it is Jehovah's Organization. She is planning to watch the Dateline show and is hoping it will prod the society to make some changes.