For decades, the voices of Holocaust survivors have fostered vital conversations about antisemitic atrocities.One of those survivors is Mark Spigelman, a retired surgeon, professor and medical archaeologist, who volunteers at the Sydney Jewish Museum."When the students ask to hear my stories, I explain to them that I don't have that many memories of events, I have nightmares of events," he said.A story of survivalBorn in Poland in 1940, Mr Spigelman was taught to open his blue eyes, smile, never cry, and to only speak German.He was also taught that in public, he was to appear as a girl."The Jewish faith...