It was a startling sight on the stone steps of Parliament House, the grand seat of state government in Melbourne, Australia: more than two dozen people dressed in black, many with their faces covered, each extending an arm in an unmistakable Nazi salute. The 30 or so people, who later identified themselves as members of the Australian neo-Nazi group the National Socialist Network, appeared on Saturday amid a crowd of about 300 people at a protest against transgender rights that was led by the British anti-trans rights campaigner Kellie-Jay Keen-Minshull. The display shocked political leaders in Victoria, the southeastern state...