The violence which we have seen of the antifa in American and Europe, will no doubt be replicated here in Australia. It is well known now, that antifa protestors, who break the law, get treated with kid gloves by the corrupt legal system, while those of the Right get smashed with an iron fist:
http://www.vdare.com/articles/anarcho-tyranny-update-mounting-proof-that-the-charlottesville-five-are-political-prisoners
The antifa types who assaulted people, including a pensioner, during the Pauline Hanson protests of the late 1990s, as far as I have ever been able to ascertain, got away with it. Those who have smashed up offices and damaged property, never have been charged, or if charged, imprisoned. Yet, we need only put one hair out of line, and whack!