For those unfamiliar with the australian parliment - the definition of what "Parliamentary Privilege" is: http://www.aph.gov.au/senate/pubs/briefs/brief11.htm#1
I think you miss understand the purpose of "parliamentary privilege", my fellow australian. Our elected representitives can discuss such issues as the authenticity of Scientology, without fear of slander/libel suits or gag orders or general legal hoop-la to silence their criticisms. It is their role to raise issues of their consitutents in such as manner, so that members of the public can come forth/organise/e.t.c to provide the necessary PROOF that the laws are being broken. Then the appropriate law enforcement agency can be engaged.
Sorry mate - I don't want to live in your world where if no-one talks about a problem it doesn't exist - that's just plain foolish.
But regardless, by READING THE FIRETRUCKING ARTICLE, you would have encountered the first two paragraphs stating:
"Senator Xenophon used a speech in Parliament last night to raise allegations of widespread criminal conduct within the church, saying he had received letters from former followers detailing claims of abuse, false imprisonment and forced abortion.
He says he has passed on the letters to the police and is calling for a Senate inquiry into the religion and its tax-exempt status."
First sentence of your post: "If you think a person has broken the law then call the cops" ... Check - he's passed on the letters to the police.
As for the rest - I can't believe you're trying to align criticism of Scientology with an attack on your freedom to associate ... Unless you're a scientologist too...
Addendum: For those in America - Australia doesn't have a "Bill of Rights". We work on the principle you have a right to everything, unless prohibited by law. There's no explicit listing of rights that you guys have ... YFMV? (Your Freedom May Vary)