The leader of one of the world's most high-profile Jewish organisations says Australia faces a crucial test on how it tackles the rise of antisemitism as the royal commission resumes in Sydney.On Tuesday, in its seventh hearing block, the commission will analyse the democratic function of protests, hateful conduct that sometimes occurs at protests and how police manage demonstrations.Anti-Defamation League chief executive Jonathan Greenblatt is on the frontline of fighting antisemitism in the United States and has turned his attention to Australia during a visit this week.A former White House adviser to Barack Obama, he is among the most senior...