There's an old joke that Australians are so laid back they're in constant danger of falling over. Known for its sun, surf and occasionally shark attacks, Australia has gone from being the easy-going land Down Under to experiencing a surge of antisemitism that most Jews thought was relegated to the dark annals of Jewish history. In the line of fire are Australian-Jewish actors, musicians, writers, and others in the traditionally left-wing arts community. They are being pushed by fellow artists to denounce Israel as a modern-day Satan or be banished from the local arts scene. The attacks and vitriol have...