Who are the trolls? Trolls and 'trolling’ have been dominating headlines since some high-profile Australians found themselves at the centre of vicious attacks on Twitter. And it’s not just celebrities being targeted. Grieving families have been shocked to find their Facebook tribute pages to dead loved ones defaced with violent and disturbing images. While a lot has been said about these so-called trolls, hardly anyone has been able to speak to them. In an extraordinary television event, Insight hears from the trolls themselves – unmasked and unafraid to talk openly about their activities and where they draw the line. They face off with trolling victims and experts to discuss the impacts of trolling, whether a crackdown on trolling would threaten free speech and whether people simply need to 'toughen up’ when they enter online spaces.