Who's behind the lockdown protests?

Anti-lockdown protests were held in at least four capital cities on Saturday, and in the aftermath of the biggest march, in Sydney, police have made at least 60 arrests. Online, the organisers are defiantly planning further marches, prompting a warning the response next time will be even stronger. So what do we know about who organised the latest anti-lockdown rallies? And with so many people apparently buying their message, where does the movement go from here? Featured: Michael McGowan, Reporter, Guardian Australia, Sydney