They remain silent... because maybe they know what, why, how, when, whom, etc happened to Prisoner X. They remain silent because maybe some of them work for/inform to/directly support Mossad and/or Shin Bet. They remain silent because their own 'allegiance' to the country they live in - Australia - is now in question versus their allegiance to Israel. They remain silent because there is more rotting stench coming once again from Israel... they cant apportion blame to Arabs, Islamists, Nazis, Gehlen or insurgents for this one... can they? The Zygier family is quiet from grieving?! What if they are quiet because maybe in 2010 they sold out their own son to Mossad as informants? Tragic.
Palestinian girl, 17, arrested in Old City of Jerusalem with knife in her bag (Haaretz)