"In a place where they burn books, they will burn people."So thought Zack Shachar when he found pages of the text that underpins his Jewish faith torn and scattered through the streets of an Australian city.The words paraphrase a quote from German-Jewish writer Heinrich Heine that prophesied the Nazi book burnings a century later.It was December 2023 and Mr Shachar, who migrated to Sydney from Israel more than a decade before, was visiting the Gold Coast with his family.While out on a walk together, Mr Shachar's daughter found a piece of paper bearing what she recognised as Hebrew script.Soon, they...